Nearly one in four Sun-like stars may host planets as small as Earth.
Professors urge one-way Martian colonisation missions to cut costs.
Colourful clouds of gas surround the dying ember of a Sun-like star.
New way to accurately determine the size and mass of stars and planets
Lunar impact missions reveal treasure trove of ice and other useful chemicals.
Spiral galaxy 68 million light-years away is full of newborn stars.
NASA’s EPOXI mission is hurtling toward a rendezvous with Comet Hartley 2
Peering into the heart of a stellar nursery in the constellation Monoceros, the Unicorn.
Ancient type of galaxy has been found to exist in today’s universe.