Going to the moon is hard, and Israeli nonprofit SpaceIL is one of a handful of organizations that knows exactly how hard.
The aviation giant aims to take astronauts to the International Space Station in a capsule that is similar to Apollo spacecraft.
Rigel is the brightest star in Orion, and will eventually explode into a supernova, most astronomers say.
The CHIME radio telescope aims to explain two poorly understood cosmic phenomena, one dating back to the early universe and one taking place today.
IBEX is helping astronomers figure out where the edge of our solar system ends and the rest of space begins.
Over the course of 11 years, Stardust visited an asteroid and two comets and sent pieces of space matter back to Earth.