After a yearlong flight of a billion kilometers, a Chinese space probe is set to take samples from an asteroid. The mission is part of what President Xi Jinping calls the country's "space dream." The ...

Scientists now believe life may be found on the notoriously inhospitable planet of Venus – but they believe it will have come ...

Asteroids, comets and Kuiper belt are bodies smaller than planets that orbit the sun. Asteroids are composed of metals and rock, whereas comets also contain ice and dust. The Kuiper belt is a ...