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Interstellar Travel with Sailing (Space) Ships

25 Mar 2020, 10:00 UTC
Interstellar Travel with Sailing (Space) Ships M. Weiss/CfA

Travelling to distant stars is one of humanity’s long-term aspirations. However, interstellar travel is a challenging endeavour due to the vast distances between objects in the universe. For example, our closest stellar neighbour, Proxima Centauri, is over four light-years away. The journey there would take over 73,000 years with the Voyager 1 spacecraft – too long for a human crew. In general, travelling to other stars is only possible at relativistic speeds.

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