It has been 10 years since Elon Musk's SpaceX launched the commercial space age. What hurdles must be overcome before private companies begin exploring, colonizing and mining other planets?
The first poem in space was a plea for world peace.
Scotland's former first minister has sparked outrage in the UK with his latest move.
Our fascination with space shows no signs of slowing down, 60 years after the Soviet Union launched the world's first satellite, Sputnik.