The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are ...

Pfalzner's models show that interstellar objects — bodies ejected from other star systems — could be captured by these planet ...

Imagine a massive celestial body colliding with Uranus at high speed; this impact could have 'overturned' Uranus, causing its ...

Located approximately 700 light-years from Earth, this planet is famous for its extremely short orbital period and extreme ...

Astronomers have discovered the raw ingredients of planets orbiting two infant stars, offering a glimpse into how new worlds ...

While radio waves are the method of choice when searching for signals of intelligent alien life, other detectable signs also ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...

An international team led by the University of Geneva (UNIGE), including scientists from the National Center of Competence in ...

Who hasn't looked into the sky and wondered if there's life out there, somewhere, looking back at us? Is it possible there's ...

When I was a kid, there were nine planets. Now we know of thousands! But that includes exoplanets, alien worlds that orbit alien suns. Only eight planets call our solar system home. Or there might ...

There’s a bit of a paradox about our galaxy: it’s both jam-packed with stars and cavernously empty. The Milky Way is crowded in the sense that it holds hundreds of billions of stars, as well as ...

This article was originally featured on The Conversation. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of ...