New research shows that dry ice blocks, not water or life, may be responsible for the mysterious gullies carved into Mars’ ...

Mars’ north polar vortex locks its atmosphere in extreme cold and darkness, freezing out water vapor and triggering a dramatic rise in ozone. Scientists found that the lack of sunlight and moisture ...

Mars and Venus may look hostile today, but scientists believe they were once Earth-like. This documentary explores their hidden pasts and what changed their fate. 'Removal of Ukrainian flag is deeply ...

Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest ...