Our Solar System is home to eight extraordinary planets, each with its own unique features, mysteries, and beauty. This cosmic journey takes you from the Sun-scorched surface of Mercury to the icy ...

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...

Stars often whip their planets with solar winds and radiation, pull them ever closer with gravity and sear them with heat.

Astronomers are meticulously tracking the new interstellar visitor that is crossing our solar system. Officially designated ...

The exoplanet, a planet beyond our solar system, has been dubbed TWA 7b after NASA's James Webb Space Telescope captured ...

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