While comets were historically thought to be ill omens of war and famine, recent science has revealed that these celestial wonders actually contain amino acids, the building blocks of life on Earth. Justin Dowd explores the implications...

Life on Earth has always been shaped by other bodies in space, and life in our oceans is especially susceptible to interactions that have huge effects on life as we know it!

SciShow Space shares the latest developments from around the universe, including news about the first material ever collected from outside the solar system, and a backyard astronomers’ guide to two upcoming planetary conjunctions.

On January 2, 2004, NASA's Stardust spacecraft flew by comet Wild 2 to collect some comet dust and bring it back to Earth. Stardust was the first robotic sample return mission of its kind. It didn't land on the comet, but it flew close...

Aerogels are the world's lightest (least dense) solids. They are also excellent thermal insulators and have been used in numerous Mars missions and the Stardust comet particle-return mission. The focus of this video is silica aerogels,...

Everything about NASA's Stardust mission to Comet Wild 2.

Why are missions like OSIRIS-REx bringing pieces of an asteroid back home?