Watching Jupiter Through Icy Europa

The composition of jupiter is similar to that of the Sun - mostly hydrogen and helium. Deep in the atmosphere, pressure and temperature increase, compressing the hydrogen gas into a liquid. 

This gives Jupiter the largest ocean in the solar system—an ocean made of hydrogen instead of water....

The red planet is actually many colors. At the surface, we see colors as brown, gold, and tan. The reason Mars looks reddish is due to oxidization—or rusting—of iron in the rocks, regolith (Martian “soil”), and dust of Mars. This dust gets kicked up into the atmosphere and from a distance makes t...

If you look directly at a black hole it looks like nothing. the space is under their control is blocked by an invisible one way border called the event horizon.

The event horizon forms a sheel around a region of space that, once entered, is shielded from the rest o...