Astronomers have confirmed that a recently spotted object is an interstellar visitor, and appears to have come from the ...

Our solar system contains objects ranging in size from the sun, the largest item, to tiny grains of rock in the asteroid belt. Take a tour of our cosmic neighborhood in pictures. Come on, let's go!

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

A new interstellar object, A11pl3Z, has been discovered in our solar system, marking the third such object to be observed. It ...

The icy giant is more than 10 times the size of any known comet, according to the National Radio Astronomy Observatory.

All the items you need to know about to observe our local star, the sun, safely ahead of the next solar eclipse. The sun is an amazing celestial object. It is not only at the heart of our solar ...

There may be another world lurking between the orbital lines of our solar system. Astronomers in Japan have published their theory of an “Earth-like planet,” dubbed Planet Nine, that’s ...

Other planets in the system could still be undetected, which is why the astronomers are calling for additional observations. Little is also known about the composition of the planets or their ...

This solar system is unique because all six planets move similar to a perfectly synchronized symphony, scientists said. In technical terms, it's known as resonance that's "precise, ...

Our Solar System possibly survived a supernova because of how the Sun formed The gas that produce stars also cushion them from the blast of nearby supernovae.