"The blue and the white and the brown just hung in the blackness of space."
The physicist's inistence on mankind's expansion risks making him a handmaiden of inequality.
There are both optimistic and pessimistic visions of our future in space.
Google Earth is spectacular – but it can give a misleading impression of the planet and the threats we face from climate change.
Scientists are scouring the Earth's deserts for life that might thrive on Mars. But is the Red Planet a distraction?
An unusually bright luminous flare was observed last June. New data shows it may really have been the dying flash of a star being shredded by a supermassive black hole.
The Space X CEO detailed the practical measures required to turn his Interplanetary Transport System from a science fiction dream into near future reality.
On course for asteroid Bennu, Osiris-Rex hopes to return material that will explain the beginnings of our planets.
Newly developed images from the Rosetta probe pinpointed Philae's whereabouts on comet 67P.
There are promising signs in the search for life on Earth-like planets, as new research has found an exoplanet orbiting Proxima Centauri, the sun’s closest neighbouring star.
The British astronaut is set to return back to Earth this Saturday, following six months on the International Space Station.
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