Ganymede, Jupiter's largest moon and the solar system's largest, is bigger than Mercury and the dwarf planet Pluto, with a diameter of 5,268 kilometers.

Buried more than 3,000 miles beneath our feet, Earth’s solid inner core was once thought to be unchanging—locked in place at ...

On Saturday, people in parts of the United States, Canada, the Caribbean, Europe, Russia and Africa will get to experience a ...

If that’s too long to wait, two total lunar eclipses are also coming, one in September and another next March. Unlike total ...

Earlier this year, the tiny rocket company that wants to grow up to be SpaceX someday told NASA that, if it's agreeable, ...

The "blood moon" created by a total lunar eclipse shone above America's skies earlier this month; now, a partial solar ...

Deep below the Earth’s surface, rock and mineral formations lay hidden with a secret brilliance. Under a black light, the chemicals fossilized within shine in brilliant hues of pink, blue and green.

NOIRLab shared stunning views of the total lunar eclipse in the night sky over Chile, complete with a blood red moon and ...

What's on and in a star? What happens in an active galactic nucleus? Answering those questions is the goal of a proposed ...

The artwork, created by Singaporean artist Lakshmi Mohanbabu in collaboration with tech company NuStar and NTU Singapore, has ...

The final act of the Blue Ghost lander's busy two weeks on the moon was to send back sunset shots featuring Earth and Venus.

NASA’s new video is also just fun to watch. The animation shows what the seafloor looks like off the coasts of Mexico, South ...