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The Times

Spacefarers may contaminate other worlds – but scientists have plans to keep the cosmos clean

  • Written by Kirsten Banks, Lecturer, School of Science, Computing and Engineering Technologies, Swinburne University of Technology
Spacefarers may contaminate other worlds – but scientists have plans to keep the cosmos cleanDebris on the surface of Mars from the Perseverance mission, captured on April 19 2022. NASA/JPL-Caltech

In his inauguration speech in January, United States President Donald Trump declared the US would “plant the stars and stripes on the planet Mars”.

This shouldn’t come as a surprise. In 2017, in Trump’s previous term of...

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