New research suggests ancient Mars may have been warm and wet, with rainfall or snowmelt carving its iconic valleys.

For the past four years, NASA 's Perseverance rover has rambled over a region of Mars where scientists say a strong river ...

"You could pull up Google Earth images of places like Utah, zoom out, and you’d see the similarities to Mars." ...

"Before Hubble, no generation ever had access to unimaginably vibrant views of space, stretching almost all the way back to ...