Everyone knows them, no one really understands them. Cosmologist Jean-Luc Lehners on time travel and the question of how you can jump 50,000 years on Earth in a spaceship.
Time is a strange dimension, sometimes there is too little of it, sometimes too much, sometimes you want to stop it, sometimes fast forward, but none of it works. Or is it? Cosmologist Jean-Luc Lehners appears in the video tile, spatially far away but super punctual in time. Ready to go.