The ripples suggest that the lake was free of ice at one point.

A private spacecraft on a pretty badass mission has sent back footage of the far side of the Moon, on its way to land in the ...

Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.

Callisto, the third largest moon in the entire solar system, orbits Jupiter from about 1.2 million miles away. The rocky ...