The Oort cloud is a shell of icy objects that forms the very outskirts of our Solar System. Recently ... the Milky Way galaxy in which they (and we all) reside. Because it is less tightly bound ...

Astronomers believe they've discovered a spiral structure inside the Oort cloud that surrounds our solar system.

And tantalizingly, what they found suggests that our solar system may already be flooded with visitors from the star system, which is about 4.25 light years away. These objects range from ... And with ...

On Feb. 28, we’ll witness a rare cosmic event as all seven planets in our solar system will come into a rare alignment ...

And tantalizingly, what they found suggests that our solar system may already be flooded with visitors from the star system, which is about 4.25 light years away. These objects range from ...

Alpha Centauri is the star system closest to our Solar System ... despite the small number of objects from Alpha Centauri that are expected to make it all the way to Earth every year, there ...

Countless asteroids in our solar system, some close, some far — but did you know that some of these space rocks have names?

On the afternoon of February 28, 2025, the other seven planets in the solar system will appear in the night sky at the same time, with Saturn, Mercury, Neptune, Venus, Uranus, Jupi ...

The detection of a large interstellar object in 2017 named 'Oumuamua was a landmark discovery. Figuring out where the wayward traveler came from, though, is another challenge entirely, especially ...