Could our sun have had a partner star during the early days of the solar system? A new study suggests our sun may have had a binary companion, like the system of the planet Tatooine from the original ...

While the Sun is very clearly a solo act nowadays, some astronomers theorize that it once had a binary companion star. Now, Harvard scientists have added weight to the idea by showing that an ancient ...

Planets can orbit one star in a binary system (S-type orbit). Planets can orbit both stars in a binary system (P-type orbit). Planets might share an orbit with a smaller star in a binary system ...

NASA's Hubble Space Telescope is hot on the trail of an intriguing new class of solar system object that might be called a Pluto "mini-me" -- dim and fleeting objects that travel in pairs in the ...

An international team of researchers has just revealed the existence of three Earth-sized planets in the binary stellar system TOI-2267 located about 190 light-years away. This discovery, published in ...

Last October, astronomers spotted the first known visitor from another star system as it zoomed through the inner solar system at breakneck speeds. The interstellar interloper, since named ‘Oumuamua ...

An international team of astronomers from the US, Europe, Chile, and South Africa have identified a star system that most likely passed through the outer edge of our solar system at a distance of 0.8 ...

The mystery of how planets and icy objects formed in the farthest reaches of our solar system just took an exciting turn. A team of researchers from NASA recently uncovered strong evidence for a rare ...

A strange pair of space rocks twirling around each other as they orbit the sun has helped scientists pinpoint when our solar system developed its current formation. That's according to new research on ...