The spacecraft—humanity's most distant probe—managed to resumed contact by switching to a secondary radio not used since 1981 ...

has become the second human-made object to leave our Solar System. It was launched 16 days before its twin craft, Voyager 1, but that probe's faster trajectory meant that it was in "the space ...

Lecturer, Centre for Astrophysics and Supercomputing, Swinburne University of Technology By analyzing the movements of ...

New insights into the origins of high-energy cosmic-ray electrons point to a mysterious source close to our solar system.

A new study suggests that the planet’s icy interior and liquid ocean could be insulated with a three-to-six-mile-thick layer of methane clathrate, which is solid water ice with methane gas trapped in ...