Mysterious Mars mounds may bolster case for ancient Red Planet ocean
Buttes and mesas in Mars' Chryse Planitia contain clay minerals made from liquid water interacting with the rock nearly 4 billion years ago.
Invisible ‘flickering’ on the sun could predict potentially dangerous solar flares hours in advance
Images captured by NASA's Solar Dynamics Observatory have revealed that "coronal loops" give off subtle flashes of ultraviolet light before a solar flare, which could act as an early warning system for dangerous space weather.
NASA wants to launch rockets into northern lights to study ‘black auroras’
NASA plans to fly two rockets through active auroras and study the unique ribbons of light that dance across the Alaskan night sky.
Electric spacecraft propulsion may soon take a leap, thanks to new supercomputer
Spacecraft powered by electric propulsion could soon be better protected against their own exhaust, thanks to new supercomputer simulations.
Could we travel to parallel universes?
If parallel universes exist, can we access them? Let's explore the possibility.
What is Section 31? The ‘Star Trek’ spy organization explained
As the shadowy branch of Starfleet Intelligence gets its very own movie, we look back at Section 31's morally dubious history.
Scientists discover exoplanet with 20,500 mph winds — the fastest in the known universe
"The planet has complex weather patterns just like Earth and other planets of our own system."
Watch ‘planetary parade’ online for free on Jan. 25
The Virtual Telescope Project will livestream telescope views of the "planetary parade" on Saturday (Jan. 25), featuring a lineup of six planets, including Mars, Jupiter, Uranus, Neptune, Saturn and Venus.
Thinking of Buying a Telescope? Here’s Our Advice
In some cases, binoculars are a better bet.
Total lunar eclipse September 2025: When and where to see the ‘Blood Moon’ lunar eclipse
The second total lunar eclipse of 2025 will be visible from Asia and western Australia on Sept. 7-8, 2025.