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

For only the third time in history, astronomers have detected a new interstellar visitor — an object from another star — blitzing into our solar system.

Comet or asteroid heading for the Sun is only the third time an interstellar object has been spotted inside our group of ...

NASA’s Lucy spacecraft made a pivotal encounter with the main-belt asteroid Donaldjohanson. Capturing high-resolution images ...