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

But an international team of astronomers have detected the unmistakable signature of a gas giant planet orbiting the ...

Folks, it's official: the object that astronomers recently spotted blowing through the outer solar system came from ...

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

The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you include the ...

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

Sometimes, "the universe comes to us," writes the European Space Agency — the third time now since 2017. What is it and are ...

For years, scientists have been scanning the icy outskirts of our Solar System for an unknown massive planet. The ...

NASA has discovered a new interstellar comet that's currently located about 420 million miles away from Earth. The space ...

A comet has entered the Solar System from interstellar space and will pass through the inner planets later this year, NASA ...

NASA has discovered an interstellar comet that's wandered into our backyard. The space agency spotted the object with the ...

A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from ...