NASA's Mars Helicopter has sent back some incredible new photos of the backshell and parachute that helped the Perseverance rover land over a year ago.
Europa's odd ridges may form similarly to those in Greenland. The ridges occur over subsurface pockets of potentially habitable water in the moon's ice shell.
Astronomers using orbital and ground telescopes suddenly noticed stars that increase in brightness for only a few hours. They're calling them micronovas.