The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

This gas giant has some really unique features that make it stand out. If you’re curious about space, learning a few things ...

Jupiter isn’t alone in this category; Saturn, Uranus, and Neptune are also gas giants, though Uranus and Neptune are often ...

Mercury reaches its greatest elongation, 26 degrees east of the sun on July 4. From latitude 40 degrees north, the ...

Two icy moons of Jupiter, though neighboring and of similar size, exhibit radically different internal structures. A new ...