Stephen Hawking calls for Moon and Mars colonies

Stephen Hawking called for a massive investment in establishing colonies on the Moon and Mars in a lecture in honour of NASA's 50th anniversary. He argued that the world should devote about 10 times as much as NASA's current budget – or 0.25% of the world's financial resources – to space.

The renowned University of Cambridge physicist has previously spoken in favour of colonising space as an insurance policy against the possibility of humanity being wiped out by catastrophes like nuclear war and climate change. He argues that humanity should eventually expand to other solar systems.

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