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Is there a killer asteroid with Earth鈥檚 name on it? The dinosaurs ruled for many millions of years before coming to their violent end. Will humanity prevail or are we doomed to succumb like the dinosaurs? It鈥檚 a question that will keep you up at night. No wonder our listeners Zarin and Pablo wanted to know more.

To find out, Anand Jaggtia heads to Denmark to see first-hand the evidence for a giant asteroid impact, written into the rocks at Stevns Klint. And we will hear from scientists at Nasa who are keeping a careful eye out for asteroids on collision course with Earth. Also, we discover that asteroids have a lot to answer for, maybe even our own existence.

Do you have a question we can turn into a programme? Email us at crowdscience@bbc.co.uk