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Astronomers watch a black hole’s feeding frenzy end with a bad case of cosmic indigestion

Astronomers have used the Very Large Telescope (VLT) to observe the violent outflow of material from a distant black hole. The observation once again shows that even the hungriest black holes are extremely messy eaters, while also revealing the "digestive processes" of these cosmic titans in unprecedented detail.

The research focuses on the black hole system Swift J1727.8−1613, located around 8,800 light-years away, and a violent bout of cosmic indigestion and the bright eruptions the system triggered back in 2023. That episode is what initially led to the discovery of Swift J1727.8−1613 in 2023, and it resulted in the system becoming one of the brightest X-ray sources in the sky over Earth.

A team of astronomers has now discovered that as this black hole greedily stripped a star of its stellar material, some of this matter was consumed, but other stellar material was blasted back into space as high-speed jets and powerful black hole winds. They also found that the most massive outflows of material happened when the black hole's feeding activity was much lower than previously thought. The upshot of this is the conclusion that black holes aren't quite the "bottomless pits" scientists had assumed, but are far more like complex cosmic digestive systems.

"People often imagine black holes simply swallowing everything around them," team leader Noel Castro Segura of the University of Warwick in the UK said in a statement. "What we're seeing is a much more complex process. Matter falls in, the system processes it, and a surprising amount is expelled again."

The changing face of a feeding black hole

Swift J1727.8−1613 consists of a black hole surrounded by a swirling platter of material pulled away from a companion star. This matter still has angular momentum, or rotation, so it can't directly fall to the black hole, but instead forms this structure, called an accretion disk.

The immense gravitational influence of the black hole generates intense tidal forces and friction in the accretion disk, superheating it and causing it to glow brightly.

The observations of this glowing disk conducted by Segura and colleagues differ from previous studies of black hole outbursts because their detailed study allowed them to watch the Swift J1727.8−1613 system change over time as it fed on a star.

a glowing red disk of glowing gas around a bright black orb. the disk is being created by a cone of blue-white gas streaming from a nearby blue-white orb

An illustration of a black hole stripping stellar material from a companion star. (Image credit: Chandra X-Ray Observatory, NASA)

The resulting "movie" of this feeding black hole revealed that as the cosmic titan blasted out jets, the accretion disk slowly feeding it underwent changes of its own.

That gives scientists a rare and fleeting insight into the connection that exists between matter falling to the maw of a black hole and the material being blasted out at near light-speed as jets of plasma.

The team also found that even after the feeding frenzy of this black hole had subsided, it seemed to still be powering black hole winds of dense gas. They suggest that the amount of material flung away by the black hole may eventually amount to the same mass as that consumed by the black hole, meaning half of its stellar meal was eventually lost to space.

"If black holes can continue shedding material even after their largest outbursts, it means they may be much less efficient eaters than we previously assumed," Segura added. "A significant fraction of the meal may never reach the black hole at all, changing our understanding of how binary stars in galaxies evolve."

The fact that this team was able to observe the entire feeding cycle of this black hole from its initial flare to its dramatic and rather windy end paints a clearer and more dynamic picture of this process than scientists have ever had access to before.

"We usually gravitate towards the dramatic fireworks when a black hole outburst begins, but our observations show that the finale can be just as intense," Kyle Solomons, Doctoral Researcher at the University of Cape Town, said.

The team's research was published on Wednesday (July 29) in the Monthly Notices of the Royal Astronomical Society (MNRAS).

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Dinosaur-killing asteroid may have caused firestorms 17 times hotter than the thermal limit lethal to humans

Scientists once suspected that a brutal, years-long winter starved the dinosaurs following an asteroid impact 66 million years ago. New evidence suggests a more violent end: widespread firestorms that may have burned even thick-skinned dinosaurs to a crisp within hours.

The roughly six-mile-wide (10-kilometer-wide) asteroid struck Mexico's Yucatán Peninsula, excavating the Chicxulub crater and vaporizing enormous quantities of rock. Some of that material condensed into tiny droplets called spherules, which spread around the planet before falling back through Earth's atmosphere at several miles per second.

As the spherules slowed, their kinetic energy became heat, producing an intense pulse of thermal radiation. Earlier models suggested the effect would have resembled a worldwide broiler that was potentially deadly to exposed, thin-skinned animals, but not powerful enough to ignite vegetation across the globe.

A new study argues that those calculations overlooked a crucial ingredient: a thick layer of fine silicate dust formed from rock vapor that did not initially condense into spherules. Evidence for that dust emerged in 2023 from the Tanis fossil site in North Dakota, where researchers identified a layer of extremely fine, impact-derived material deposited above the spherules. A similar dust layer has since been documented at the K–Pg boundary (which divides the "age of reptiles" and the "age of mammals") in Raton Basin across the Colorado–New Mexico border.

"It reinvigorated my interest in what happened to the leftover vapor — that's where this work started," lead author Brandon Johnson, a planetary scientist at Purdue University, said in a statement.

The dust would have acted like an insulating blanket, preventing thermal radiation from escaping into space and redirecting more heat toward Earth’s surface. The researchers estimated that the surface heat pulse could have been about 3.5 times more intense than what was suggested by models considering the falling spherules alone. "We're in the realm where we might be essentially killing off everything within that first hour or two," Johnson said.

The radiation may not have directly ignited thick pieces of wood, but it exceeded ignition thresholds for grass, lichen, and pine needles, which could have fueled larger fires. The study also found that exposed terrestrial animals may have received about 17 times the thermal dose considered lethal to humans.

Animals sheltering underground or in water would have had a better chance of surviving the initial heat pulse. Afterward, the same dust may have blocked sunlight for years, triggering the prolonged "impact winter" more typically blamed for the dinosaurs' extinction.

There is, however, a missing element: the wildfire evidence that supports this dust-caused inferno theory has only been found in North America. "It could be that we will eventually find the record of completely global wildfires," said Alfio Alessandro Chiarenza, a paleontologist at University College London who was not involved in the study. "We just don't have it so far."

The study was published on July 28 in the journal JGR Biogeosciences.

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How do supermassive black holes grow? AI finds 7 spacetime-warping ‘quasars’ that could help solve the mystery

Some of the brightest objects in the universe may also hold the key to understanding how galaxies evolve — especially when gravity transforms them into giant cosmic magnifying glasses.

Using artificial intelligence to search through data from the Dark Energy Spectroscopic Instrument (DESI), astronomers have identified seven promising candidates for quasars acting as gravitational lenses — natural cosmic magnifying glasses created when a massive object's gravity bends and magnifies light from a more distant object.

These unusual systems could help researchers better understand how actively growing supermassive black holes evolve, according to a statement from Ohio State University.

"Quasars are like the baby pictures of a supermassive black hole," Everett McArthur, lead author of the study and a graduate student in astronomy at The Ohio State University, said in the statement. "So exploring how we get from quasars to those black holes is really important."

Quasars are the intensely bright centers of galaxies powered by actively feeding supermassive black holes. Studying these objects can help researchers understand how black holes evolve into the enormous ones found throughout the modern universe. But as these black holes pull in gas and dust, they release so much energy that they can outshine their entire host galaxies, making those galaxies difficult to study.

Rare cases where a quasar acts as a gravitational lens offer a way around that problem, giving astronomers a unique opportunity to observe both the quasar and the distant galaxy whose light is magnified by its gravity.

Lots of gravitationally lensed objects in space. They look like different colored dots that are glowing. Some, which are lensed, look more like streaks.

Gravitational lensing can be seen in this cosmic deep field. Notice how some glowing spots are dots while others are lines. (Image credit: Image: NASA, ESA, CSA, STScI, Jose Diego (IFCA), Jordan D'Silva (UWA), Anton Koekemoer (STScI), Jake Summers (ASU), Rogier Windhorst (ASU), Haojing Yan (University of Missouri); Image Processing: Joseph DePasquale (STScI))

However, finding these rare alignments can be exceptionally challenging. To uncover them, the research team began with a catalog of roughly 800,000 quasars identified by DESI and used a machine-learning model to search for subtle signatures of gravitational lensing.

Because so few quasars acting as gravitational lenses are known, researchers had little real-world data to train their AI model. Instead, they generated simulated examples of these cosmic alignments, allowing the algorithm to learn what to look for before searching the DESI catalog. The algorithm narrowed the search to about 200 candidates, which researchers then reviewed manually. That process resulted in seven new quasar lens candidates.

Dense webs of blue and yellow strings above and below an image of the Milky Way.

Two "fans" representing DESI observations above and below the plane of the Milky Way. (Image credit: DESI Collaboration/DOE/KPNO/NOIRLab/NSF/AURA/R. Proctor/ Robert Lea (created with Canva))

The discoveries roughly double the number of known systems found through similar survey searches, according to the statement.

While artificial intelligence played a key role in finding the candidates, the discoveries highlight the scientific potential hidden within the massive datasets produced by modern astronomy. DESI is mapping millions of galaxies and quasars, creating an enormous archive that would be nearly impossible to search by hand.

Follow-up observations will be needed to confirm the newly identified quasar lenses and study their properties in greater detail. If verified, they could offer astronomers a powerful new way to investigate how supermassive black holes shaped the galaxies around them while demonstrating how AI can uncover rare cosmic phenomena hidden within the enormous datasets produced by modern sky surveys.

Their findings were published July 22 in The Astrophysical Journal.

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1st three-headed asteroid found in our solar system — and it has a little moon

Scientists have found the first triple-lobed asteroid in the asteroid belt between Mars and Jupiter — and it has a small moon to boot.

The asteroid in question is 44 Nysa, which was discovered all the way back in 1857. Of course, back then it was just a pinprick of light in the sky, and subsequent observations — including some from the Hubble Space Telescope — had failed to tell us much about Nysa. Those previous observations suggested Nysa might be bi-lobed, like many asteroids and comets such as asteroid 52246 Donaldjohanson, which NASA's Lucy mission flew past in 2025.

However, new joint observations by the Large Binocular Telescope (LBT) on Mount Graham in Arizona and the Very Large Telescope (VT) on Paranal mountain in Chile have revealed that this asteroid actually seems to have three lobes, the first such object ever seen.

"The images reveal a remarkably unusual object," said lead researcher Kate Minker of Arizona's Lowell Observatory in a statement. "The most likely explanation is that Nysa is either a contact trinary, consisting of three connected components, or an extremely irregular coherent body unlike anything we've previously observed."

Obtaining the detailed images of Nysa was not easy. Key to the success were two high contrast imaging devices, the Italian-built SHARK-VIS on the LBT and SPHERE and its ZIMPOL polarimeter on the VLT, used in conjunction with adaptive optics that counteract the blurring effect of the atmosphere.

"These observations had to be combined with specially developed image-processing techniques to further sharpen the images and remove the bright halo surrounding the asteroid, potentially hiding faint companions," said Anthony Berdeu of the European Southern Observatory.

The images showed an irregular-shaped body 47 miles (75 kilometers) at its widest point, with two notable valleys or "colli" that wrap around the asteroid's circumference and which Minker's team interprets as being the necks of the different lobes. Furthermore, the images revealed a 0.6-mile-wide (1-km-wide) moon orbiting Nysa at a distance of at least 106 miles (170 km). The moon has been designated S/2026 (44) 1 for now. And, because it was seen independently during two different observing campaigns, it was possible to observe its motion around Nysa.

An animation showing the rotation of Nysa and its orbiting moon. (Image credit: Kate Minker et al.)

"We borrowed a specialized technique from another field of astronomy, known as high-contrast imaging, to detect the small moon whose faint light was overwhelmed by the intense brightness of the primary asteroid," said Gianluca Li Causi of the SHARK-VIS team at the Italian National Institute for Astrophysics (INAF).

Nysa is named after the mythical land where the ancient Greek god Dionysus was raised by nymphs. Al Conrad of the Large Binocular Telescope Observatory finds the name fitting because Dionysus was the Greek god of theater, which for the ancient Greeks often involved wearing masks and hiding one's true identity.

"We're finally unmasking the asteroid's true nature, long after it was discovered," said Conrad.

How such a bizarre object formed remains uncertain, but Minker's team does have a couple of ideas.

The team's preferred explanation is that Nysa is a contact trinary — three asteroid bodies being held together loosely by gravity. The best alternative, the researchers say, is that Nysa once upon a time had a close encounter with a much larger asteroid that slammed into it, thereby deforming it. In these situations, modeling suggests that gravitational tidal forces could have deformed Nysa's mantle, creating Nysa's odd shape and even ripping it apart into a bunch of fragments in a string-of-peals configuration. If this is the case, then where did the other fragments go? Such events usually produce a family of asteroids all sharing the same composition, but Nysa seems to be alone (barring its moon, of course).

There could be a way to distinguish between the two possible origins. By tracking the moon's orbital velocity and period, astronomers will be able to pin down the exact mass and density of Nysa and then see which model matches it best.

Nysa has been a subject of study because it can also tell us about the birth of our own planet Earth. Nysa is more reflective than many other asteroids thanks to its surface composition that is abundant in a silicate mineral called enstatite, which lacks iron. Asteroids like this are generally called E-types, and Nysa is the largest and brightest of all of them. E-type asteroids are thought to have formed close to the sun and therefore have been identified as potential building blocks of the inner planets. If Nysa is a relic of that time, it could tell us a great deal about conditions in the inner solar system 4.5 billion years ago.

The findings can be read on the arXiv archive, and have been submitted to the journal Astronomy & Astrophysics.

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Satellites spy penguin poop on Danger Islands | Space photo of the day for July 30, 2026

Pieces of sea ice drift near Antarctica's Danger Islands in this image, acquired on Jan. 22, 2023, by the Landsat 8 satellite. Several of the islands are stained pink by guano from Adélie penguins with a krill-rich diet. (Image credit: NASA Earth Observatory/Michala Garrison)

The diets of penguins on Antarctica's Danger Islands can be seen from space. At least indirectly.

Using satellite images captured by the Landsat 8 spacecraft operated by NASA and the United States Geological Survey, scientists can track changes in Adélie penguins' diets based on the color of their guano, or droppings.

What is it?

The image above shows pinkish-orange guano staining large sections of some of the Danger Islands, Heroína Island and Beagle Island. The penguins that live there eat a diet rich in krill, small marine crustaceans that are bright pink in color due to a specific type of algae upon which they feed.

a group of penguins jump from one ice floe to another in the sea

A group of Adelie penguins jumping from ice pebble to ice pebble on a beach of Paulet Island on the tip of the Antarctic Peninsula. (Image credit: Wolfgang Kaehler/LightRocket via Getty Images)

The bright pink color of the penguins' droppings stands out in satellite imagery, allowing researchers to monitor the birds' populations from space. But scientists wanted a closer look, and collected drone imagery as well, as seen in the image below.

A colony of Adélie penguins is visible in this image captured by a drone during a research expedition to the Danger Islands. (Image credit: Thomas Sayre-McCord/WHOI/MIT)

Why is it incredible?

It's pretty amazing that the diet of a specific population of birds can be monitored from 438 miles (705 kilometers) above Earth's surface. The imagery collected by Landsat-8 helped scientists locate where the penguin colonies might be, allowing them to find them in-person and collect guano samples. Those samples contained evidence of what the penguins were eating over time.

Researchers are using those satellite images and samples to track how the penguins' diet might be affected by changes in sea ice conditions, according to a NASA statement.

"Sea ice is such a hugely important factor in the Antarctic marine environment," said Clemson University biologist Casey Youngflesh who led a study comparing the penguins' diet and sea ice conditions. "The structure of the region's food web is changing in response."

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A SpaceX rocket will crash into the moon this week, and scientists aren’t sure what to expect

On Aug. 5, Earth's moon is due for a human-made, high-speed impact from an identified flying object: a spent SpaceX Falcon 9 upper stage. The event will lead to a literal "dust up" on the lunar landscape.

That Falcon 9 upper stage is a leftover from the launch that sent Firefly's Blue Ghost-1 lander to the moon on Jan. 15, 2025. Onboard the same flight was the Hakuto-R Mission 2, called Resilience, a robotic lunar lander developed by the Japanese company ispace.

And according to a new study by an international team published on the open-source arXiv server, the resulting impact plume may briefly be bright enough to see against the dark sky near the moon's edge. That means it might be visible to moongazers with sufficiently sensitive telescopes.

This head-on collision of the errant stage is expected to occur near the Einstein and Bell craters near the western lunar limb. It may well be visible to ground and space-based assets. Indeed, putting aside all the unknowns and modeling uncertainties, some specialists suggest if you've got the time and observational prowess, it might be worth a look.

Visible ejecta spike

Using special physics simulations to model the impact, William Jo, a graduate research assistant at the University of Texas, Austin and colleagues predict the debris plume from the impact will have the central ejecta spike reaching roughly 47 miles to over 60 miles (75 kilometers to 100 kilometers) altitude.

"Our calculations suggest the plume should be several orders of magnitude brighter than the dark-sky background for the first few minutes after impact," Jo told Space.com. "So the plume should be visible, though I'd stress this is a single nominal case. The real one will look different, and the numbers are on the optimistic side. But the point worth making is that the flash isn't really the story here."

Jo emphasized that there's great slam-dunk science to be had. "Watching this one gives us a rare chance to open up ejecta-plume science and calibrate those models against a real event, which matters for every future thing we deliver to the moon," Jo said.

an animation showing a red plume expanding upward from a mottled grey surface

An animation predicting the evolution of the target ejecta column density, rendered on the lunar surface at the predicted impact site near Einstein crater by William Jo et al. (Image credit: William Jo/UT Austin)

Implications for future moon missions

According to new research led by Benjamin Fernando of the Los Alamos National Laboratory in New Mexico, the impact flash and resultant ejecta plume are "potentially observable" from ground- and space-based observational facilities.

"This event provides an opportunity to attempt the recording of an artificial impact in real-time; although many of the properties of the event (such as visual magnitude) are imprecisely predicted at present," Fernando and colleagues report.

Moreover, this rocket stage meets moon occasion yields an opportunity to test a pipeline for localizing impacts on the lunar surface for future seismic experiments, investigating the dust and plume dynamics from impact events on the moon, and considering hazards from artificial space debris impacts that future astronauts on the lunar surface might have to avoid, Fernando and team members point out.

"The maximum ballistic range of resolved particles is found to be slightly under 1,000 km, which is far enough to be significant from the perspective of presenting a hazard to future astronauts or infrastructure across much of the lunar surface," Fernando et al wrote in the study.

dozens of people smile for a portrait in front of a large white cylinder in a massive warehouse

A SpaceX photo of one of the company's Falcon 9 second stages, taken in 2022. A similar second stage is expected to impact the moon in August 2026. (Image credit: SpaceX)

Before and after

Brent Garry is a project scientist for NASA's Lunar Reconnaissance Orbiter (LRO) at Goddard Space Flight Center in Greenbelt, Maryland. LRO will be passing over the projected rocket stage crash site about seven days prior to the impact and about seven days after the impact, Garry explains.

"After the impact we might have a little bit more knowledge of where it is. We can do some additional targeting about a week after the impact and get some targeting over where the site is," said Garry, as noted in earlier Space.com reporting.

Meanwhile, Jo at the University of Texas, Austin underscores the fact that a spent rocket stage is a hollow, spacecraft-like body, and there are very few impact models for human-made objects like it. They seem to produce very different plumes than natural impactors, like asteroids or comets do. But Jo stresses that the real scientific contributions will come by studying the moments after the impact.

"My concern is that most observers will stop at the sub-second flash and never track down the ejecta, which is the part that should actually be visible, and where the science is."

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‘It’s going to do things that currently are impossible’: The Roman Space Telescope, NASA’s next great observatory, is ready to launch Aug. 30

A major space observatory is just one month away from leaving this planet.

NASA scientists got together Wednesday (July 29) to share a status update on the Nancy Grace Roman Space Telescope — the agency's next great observatory that will soon join the ranks of absolute legends like the Hubble Space Telescope and the James Webb Space Telescope.

And that press conference was overflowing with good news. The $4 billion Roman Space Telescope is scheduled to launch on a SpaceX rocket on Aug. 30 at 7:26 a.m. EDT (1126 GMT). That's nine months ahead of schedule according to the team.

I think of this as doing magic with physics."

Julie McEnery, Roman senior project scientist

"In 30 days, we're going to be launching Roman, testing it out, opening the deployable aperture cover, looking at the sky, and sending data down to the ground for the first time," Jeremy Perkins, Roman's telescope integration and test scientist, said during the press conference at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

Wednesday's update comes just days after NASA announced Roman is loaded up with hydrazine fuel, a kind of fuel that's known to be very efficient — though at the cost of being toxic and unstable. For that reason, the agency is looking for ways to move away from this kind of fuel, but it's still used often until a suitable replacement becomes available.

And with Roman, a lot of hydrazine is necessary. This is for a few reasons, as Perkins explained.

First, it's important to know that Roman's headed to what's known as Lagrange Point 2, a gravitationally stable point a million miles away, between Earth and the sun. This is a popular location for observatories because it allows spacecraft to be oriented in such a way that their instruments remain safe from heat while their solar panels can still receive sunlight for power. The James Webb Space Telescope (JWST), for instance, is at L2 as well.

On the way to L2, Roman needs to use some its fuel to course correct and make sure it's headed to the correct destination.

"We do a final orbit insertion around day 100 to get into our final orbit around L2," Perkins said. "After that, we have enough fuel to do all of the momentum dumps and the station keeping maneuvers that we need to do for five years and more."

A silvery spacecraft hanging from the ceiling of a white room.

The Roman Space Telescope hangs in the clean room. (Image credit: NASA/Sydney Rohde (Rocz))

Now that Roman's fueled up, the next step will be to get it attached to the SpaceX Falcon Heavy rocket that'll carry it beyond our planet.

"Encapsulation, which is when the observatory is installed into the fairing that will carry us to orbit, that happens in three short weeks," Jackie Townsend, Roman's project manager, said during the conference.

Townsend also added that, all in all, the whole Roman team is ready to go: "The Roman dream team continues to do mighty things, and I am delighted to say yet again, Roman is ready for launch."

A diagram of the Lagrange points. (Image credit: NASA / WMAP Science Team)

As for what comes after launch, well, there's one way to put things into perspective.

To compare Roman to the Hubble Space Telescope, consider that scientists expect Roman to produce over 500 terabytes of data per year. In its approximately 35 years of service, Hubble has produced 400 terabytes of data in total.

"Roman has broadly the same sensitivity and sharpness of vision as Hubble, but we survey the sky much faster, so that one month of observations to survey our Milky Way galaxy would take about a century with with Hubble," Julie McEnery, Roman's senior project scientist said during the conference.

"We would need over half a million 4K TVs to fully display the single Roman image from our largest survey," McEnery said. "To understand the scale, these TVs would cover 45 Manhattan city blocks."

What about comparing Roman to the JWST? While the Roman Space Telescope does have some near-infrared capabilities, thanks to its impressive Wide-Field Instrument (WFI). However, it doesn't quite stack up to the JWST's ultrasensitive infrared sensors. Where it does have an advantage, though, is when it comes to its panoramic view. A Roman image would be about 50 times wider.

"Webb is designed to be able to probe very deeply and with exquisite sensitivity into the universe so we can find rare things in the early universe," McEnery said of the JWST. "But you need Roman to find rare things in the more nearby universe."

As an example, McEnery pointed out the "little red dots," elusive objects that seem to repeatedly appear in JWST images of the ancient universe. The key to understanding what these objects are is to find as many as possible. However, with the JWST's extremely zoomed in images focused on the deep, deep universe, it can't exactly map that many at once. But Roman is built to do just that.

Once all this data is in hand, the possibilities for what we may find are endless. One of Roman's instruments called a coronagraph is expected to revolutionize exoplanet research while WFI scans the cosmos to image around 2 billion galaxies during the telescope's main survey.

"I think of this as doing magic with physics. We're taking advantage of the wave properties of light to cancel out the light from a star, so that we can image planets next to it," McEnery said.

people in white lab coats look up at a large rectangular telescope sheathed in clear plastic in a large hangar

The Roman Space Telescope undergoing acoustic testing. (Image credit: NASA/Jolearra Tshiteya)

Understanding the dynamics of as many galaxies as possible will help scientists decode the intricacies of dark matter and dark energy. We can't see the dark universe, but we can see how it affects its observable counterpart. And these are just a few of the expected outcomes of Roman's survey. As the team has continuously suggested — in fact, as most observatory teams tend to suggest — the best discoveries will be the surprises.

Even when you think about other technological advances, the principle holds true. When the internet was first invented, its inventors probably didn't expect it to lead to innovations like Facebook or Spotify and when the first video game was invented, the concept of an open world RPG maybe seemed beyond our means.

"When we built Hubble and Webb, we were chasing far off galaxies in the farthest corners of the universe. But because we have a Hubble and Webb, we're able to track asteroids that would pose a threat to Earth or to future lunar outposts on on the lunar surface," Shawn Domagal-Goldman, director of the astrophysics division at NASA Headquarters said during the conference. "Those were impossibilities that are now just possible and sometimes routine."

Perhaps whatever Roman has in store for us will lead to the next generation of its namesake, Townsend pondered.

Roman is named after Nancy Grace Roman, a pioneer in her field who was the first female executive at NASA as well as the agency's first chief of astronomy. She's sometimes called the "mother of Hubble" because of her major contributions to the telescope and is famous for breaking ground in research about satellites. She also helped form the foundation for exoplanet science decades before the first exoplanet discovery.

"The next Dr. Nancy Grace Roman, sitting in a classroom somewhere next year, will be studying our data and hopefully catch the science bug and go on to transform the world in the same way that Dr. Nancy Grace Roman did," Townsend said.

"I could not be prouder to be part of this project."

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X-ray spacecraft detects the 36-million-degree ‘breath’ of an ancient black hole

Using NASA's Chandra X-ray space telescope, astronomers have spotted the blisteringly hot exhaust fumes of one the earliest quasars, cosmic "breath" with temperatures as great as 36 million degrees Fahrenheit. This intensely bright titan is powered by a feeding supermassive black hole engine.

The Chandra X-ray telescope observed a relatively silent quasar that existed 2.1 billion years after the Big Bang. The cosmic "exhaust fumes" from this black hole engines extend out for around 100,000 light-years around a quasar at the heart of a still-forming galactic cluster, or "proto-cluster" called MQN01. These blisteringly hot gas structures will eventually become the atmospheres that envelope modern clusters of galaxies, known as the intracluster medium (ICM).

Thus, this research reveals for the first time the exact moment in cosmic history that these galactic atmospheres began to form and gather.

"The central scientific question is to understand how this hot phase forms: what are the physical conditions of the gas during its formation and what processes contribute to its heating," team member Sebastiano Cantalupo of the University of Milan-Bicocca said in a statement.

"[The data] show extraordinary properties of the gas that could provide us with the first insights into how this hot phase of the circumgalactic medium, which we now see as intracluster medium, formed."

Start your engines...

The team behind this research spotted this hot gas structure after 180 hours of X-ray observations conducted by Chandra. Until now, X-ray detections such as this have only been made for quasars that sit in active galactic nuclei (AGNs) at the heart of "radio-loud" galaxies.

The X-ray emissions from these radio galaxies come from jets of particles blasted out from around feeding supermassive black holes at near-light speeds.

But the quasar at the heart of MQN01 differs from these because it is radio-quiet. This means the X-rays detected by Chandra from this quasar are uncontaminated by plasma jets, so the observation is entirely the result of the cosmic "motorbreath" from the quasar.

"We are facing one of the most distant detections of extended thermal X-ray emission associated with the formation of hot gas in dense regions of the universe, which will likely evolve into the known local ICM," Cantalupo said.

"We believe we have identified a phase in its life in which cold gas falls towards the gravitational potential of this massive halo and is heated by gravitational shocks, reaching temperatures of about 20 million Kelvin [36 million degrees Fahrenheit (20 million degrees Celsius)].

"The densities and pressures we measured are high: one to two orders of magnitude higher than those of clusters in our local universe."

a multi-colored swirl of light with a black orb in the center. the black orb is blasting out a white line of light

An illustration of a supermassive black hole powering a quasar in the early cosmos (Image credit: Robert Lea (created with Canva))

The observations of this radio-quiet galaxy were possible thanks to the application of a technique usually used to analyze Seyfert galaxies, which host feeding supermassive black holes in the local universe (the area of space found within 1 billion light-years of Earth). The challenge the team faced was isolating the faint light from the gas from the blinding glare of gas closer to the central black hole.

"We were initially extremely skeptical ourselves," team leader Andrea Travascio of the INAF said. "Given the exceptional nature of the data, we sifted through every alternative explanation: from artificial outflows to instrumental contamination or other unsuspected effects. But each alternative scenario encountered insurmountable theoretical limitations. The thermal explanation is the only one consistent with the physical data."

Travascio and the team are now analyzing archival datasets from hundreds of other quasars to discover if this heating phase is common to protoclusters or if MQN01 is a rarity.

"Considering how unique the result was and also taking into account Chandra's technical difficulties in the final phases of its mission, the satellite has once again demonstrated its extraordinary ability to produce scientifically relevant results even after decades of operation," Travascio said.

The team's research was published on Friday (July 24) in the journal Astronomy & Astrophysics.

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NASA fuels its next-gen Roman Space Telescope for August launch

NASA announced on Tuesday (July 28) that it has officially fueled-up the Roman Space Telescope — a magnificent new observatory expected to generate over 500 terabytes of cosmic data per year. By comparison, the Hubble Space Telescope, in its 35 years of service, has created over 400 terabytes in total.

At present, the Roman Space Telescope's launch aboard a SpaceX Falcon Heavy rocket is scheduled to occur on Aug. 30 at 7:26 a.m. EDT (1126 GMT). And considering the project is sort of the gold-standard for telescope-building, as the team says it's nine months ahead of schedule and under budget, hopes are high that this launch date will stick.

Fueling of the observatory took place on Saturday (July 25) and involved pumping it up with what's known as hydrazine fuel. Hydrazine fuel is a classic sort of fuel used in NASA spacecraft as it's highly efficient; however, because its extremely toxic and unstable, there have been attempts to move away from this sort of fuel and replace it with something less hazardous.

The Roman Space Telescope's inauguration into NASA's fleet of observatories will mark a pretty big moment for the advancement of astronomy.

Roman's specs are quite impressive; thanks to that showy data-generation figure discussed above, the telescope is expected to further our knowledge of intriguing phenomena like dark matter, dark energy, supernova explosions and even the hunt for habitable exoplanets.

It will work as a complement to other major telescopes, including the James Webb Space Telescope (JWST). For example, while Roman can't see as far as the JWST, it does have the same sort of infrared vision that enables such deep space probing. What it can do that the JWST cannot, though, is see a much wider swath of space at once.

People in blue jumpsuits stand in front of a silver-wrapped telescope in a clean room.

Members of NASA's Nancy Grace Roman Space Telescope propellant, safety, and quality assurance team pose for a photo on July 20 prior to technicians loading propellant into the observatory. (Image credit: NASA/Sydney Rohde (Rocz))

One of Roman's instruments, named Wide Field Instrument (WFI), will be able to create images of the infrared universe 50 times wider than the JWST's images. This means that while the JWST is zooming in on a particular object of interest, Roman could meanwhile be compiling future targets for the JWST or catching anything fleeting that the JWST would've missed due to its highly narrow view.

As another example, to help with dark universe studies, this ultra-wide view should allow Roman to study lots of galaxy movements at once. That's great because the only way we even know dark matter and dark energy exist (aka one of the best ways we have of studying the two) is by the way they affect galaxy movements.

"So we're going to see thousands of supernovae, and some of these are going to be further away than any supernovae we've ever seen before," Dominic Benford, program scientist for the Nancy Grace Roman Telescope previously told Space.com.

To accomplish all of these goals though, Roman will have to use its new fuel supply to get to its designated station in space: Lagrange point 2. This is a sought-after spot for spacecraft as it's a gravitationally stable point about a million miles from Earth. That stability means spacecraft have to use less fuel to stay put.

"Roman will use its propellant to power two types of thrusters that help it stay in its planned orbit around L2 and ensure the solar array panels face the sun, which is the observatory's main source of power throughout the mission," NASA explained in a statement.

It's where the JWST is right now — if all goes to plan, we'll really have a nice tag-team operation happening over there.

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Our Milky Way galaxy appears to have flipped 90 degrees long ago. But why?

The Milky Way's spiral disk may have flipped over by 90 degrees, in turn altering the solar system's orbit around the center of the galaxy.

Spiral galaxies such as the Milky Way have two main, visible, structural components: a disk that encapsulates most of its stars, gas and the central black hole, and a more diffuse halo of older stars that encapsulates the disk.

However, the Milky Way's stellar halo has always been a bit of an oddity. The European Space Agency's Gaia mission measured the motion of the halo's stars to find they rotate slowly compared to other material within the spiral disk. Now, supercomputer models led by Kirill Batrakov of the University of Durham have found what triggers this: galactic mergers and spiral disks becoming flipped over.

In their simulations, Batrakov and colleagues tracked the evolution of 25 Milky-Way-like galaxies across billions of years. They found that those which had slowly spinning haloes also experienced head-on mergers with other galaxies and had their disk flipped at some point.

"We already know that the Milky Way had a massive head-on collision in the past with a galaxy known as Gaia-Sausage-Enceladus," Batrakov said in a statement. "So, we think that the Milky Way disk likely flipped in the past."

Gaia-Sausage-Enceladus was a dwarf galaxy with more than 10 billion times the mass of our sun that slammed into the Milky Way between 8 billion and 11 billion years ago. The evidence for this collision was also found in Gaia's measurements of the motions of stars. The colliding galaxy's strange name comes in part because as it was ripped to pieces by the Milky Way's gravity, its stars were channeled onto highly elongated, sausage-shaped streams that our galaxy incorporated into its halo.

This collision was the last major impact that our Milky Way galaxy experienced, but maybe not the last major event that it experienced. At some point, the Milky Way's disk seems to have also flipped, but what caused this is uncertain. Also of note: The simulations showed that galaxies whose disks flipped hadn't always experienced a merger.

"We think that there might possibly be different mechanisms driving the disk flips," Batrakov told Space.com. "At this point, we are not sure which scenario applies to the Milky Way specifically and a further investigation is needed on the precise mechanics of disk flips."

These two mechanisms — the merger and the flip — would both contribute to the slower spinning halo. The head-on merger sees lots of stars from the Gaia-Sausage-Enceladus galaxy get thrown into the halo but on trajectories strongly misaligned with the disk. So, relative to the disk, they collectively rotate more slowly.

Various boxes showing the progression of a flipping galaxy.

An example of the history of a simulated galaxy that has experienced a head-on merger and a disk flip (seen between redshifts – denoted by z – 1.4 and 0). (Image credit: Auriga Project)

The disk flip leads to a similar situation. In the simulations, the flip is measured with respect to the space around the galaxy, but as the orientation of the disk changes relative to the halo, the halo doesn't immediately reorient with it and takes its time to synchronize its rotation with the disk. Hence, this misalignment results in the halo having less coherent rotation relative to the new orientation of the disk.

If the disk flip occurred during the solar system's lifetime, then it could have impacted our own orbit around the galactic center.

"A disk flip means that most of the Milky Way's stars once moved on very different trajectories than they do today, possibly even our sun, meaning our 'stable' spot in the galaxy might not have been so stable for the solar system's whole lifetime," said Batrakov.

Much of what we understand about other galaxies comes from our knowledge of the Milky Way and its story.

"Finding that its disk flipped adds a new chapter to that story, one we must account for when placing the Milky Way in a broader context of other galaxies," said Batrakov, who recognizes just how incredible it is that we can infer this story through careful observations billions of years after the fact.

"What excites me most is that this complex history can be reconstructed just from present-day observations," he said.

Batrakov presented his work at the Royal Astronomical Society's National Astronomy Meeting, being held at the University of Birmingham between July 20 and July 24.