What's special about each of the planets?
This Earth Day, activists are calling for an end to plastic pollution. DW has been following the impacts of disposable plastic and efforts to do away with it — by everyone from artists to policymakers.
It might not be any bigger than your own refrigerator, but the TESS telescope will deliver the stuff of your wildest sci-fi fantasies: Earth-sized planets by the hundreds, and all in the next two years.
Climate change is a global threat. So where to get the best perspective on the problem? Space! Scientists are monitoring Earth with satellites and running experiments in zero gravity to help save our fragile planet.
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