NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.

Sedna will reach its closest approach to the Sun in 2076, providing a remarkable space-faring opportunity that won’t come ...

A cosmic body from another star system has entered Earth and is the largest one ever seen. In the previous decade, two other ...

It appears our solar system is getting more popular with out-of-towners. Astronomers have found a third interstellar object, ...

Beginning in the 1960s, satellite instruments have measured Earth's reflected broadband shortwave radiation and emitted ...

The Bernardinelli-Bernstein comet, located in the Oort Cloud, was observed by the ALMA to record the first evidence of active ...