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Musk on Mars: Is colonising the Red Planet realistic - or an excuse to ignore Earth's existential issues?
With a friend in the White House, the tech billionaire's extraterrestrial ambitions are ready for lift-off - but not ...
The next frontier? Why space tourism might not be as far-fetched as you think
As companies like SpaceX and Virgin Galactic make waves in space tourism, how long does the rest of the world have to wait ...