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Unless you’re Donald Trump, you’ve probably noticed that we haven’t been taking the greatest care of our planet over the last few centuries. And our search for life elsewhere has shown us that we’re not exactly blessed with an abundance of similar worlds in our immediate neighbourhood. So what if things got so bad that we had to move beyond our solar system? How feasible is an interstellar mission and what considerations would we have to take on board to ensure the viability of a second human colony? Dr. Frederic Marin is an Astrophysicist from the Astronomical Observatory of Strasbourg First Aired: 29/09/2018