See 6 Planets Align on January 21
Alignments of five or more planets are rare—there will be two more featuring five or more planets this year, but after that the next won’t happen until 2040.
The Brightest Comet of 2025 Is Coming. Here’s How You Can See It Shine
On January 13, Atlas C/2024 G3 will reach its closest point to the sun.
Ancient black holes ruled out as source of all dark matter
One way to solve the dark matter problem is to chalk it up to black holes formed moments after the big bang, but they can’t account for all the dark matter
Bizarre supernova may be powered by hidden disc of dust and gas
A supernova that stayed bright for over three years seemed impossible, but it could be explained if the explosion is running into dense rings of dust and gas
Weird tiny galaxies found hiding in Hubble’s Ultra Deep Field
We just found 72 new galaxies in one of the most studied areas of the sky. We can’t see their stars, but they were revealed by the glow of hydrogen gas
Light pollution is set to double between now and 2050
The first global “light census” shows that the area affected by artificial lighting is growing by 2.2 per cent every year, posing risks to wildlife and human health
We got a good look at the interstellar asteroid and it’s weird
Our first detailed glimpse at ‘Oumuamua, the interstellar asteroid that recently flew by Earth, shows it’s one of the weirdest asteroids we’ve ever seen
We’ve just found a nearby exoplanet that could be right for life
A newly discovered nearby world is probably close in size and temperature to Earth. This exoplanet might be able to host life because of its unusually calm star
Giant star smash-up may have made the biggest neutron star ever
The collision that produced recent gravitational waves may have left behind the biggest neutron star ever seen. But it might have collapsed into a black hole
We may have just seen the first comet from another solar system
An icy comet just hurtled past the sun on a strange path that suggests it came from outside our solar system, making it the first such interloper we've ever spotted