​Could space junk cause a war?

Gas cloud big enough to make 2 million suns is boomeranging around our galaxy, says NASA

​Is Earth actually two planets?

Why we need a planetary protection officer

Why NASA's Day of Remembrance still matters

Loneliest planet in the cosmos found in the universe's largest solar system

16 great gifts made from meteorites

How NASA will keep Earth safe from asteroids

Aliens haven't been discovered because they've all gone extinct, says scientist

Watch astronaut Scott Kelly play Pong with a drop of water

Massive invisible 'noodles' detected in our galaxy. What are they?

Does 'Planet Nine' exist?