65 million years ago an asteroid struck the earth. In the ensuing planetary darkness, the dinosaurs went extinct. But the dinosaurs didn’t have a space program! Now we can spot incoming asteroids with steadily improving confidence. If we see one on a collision course with the Earth, we know from the movies that the solution is to nuke it...Right? Actually, NASA has a better idea. If you can just nudge an asteroid slightly off its current path, maybe 25 or 50 years before it hits us, it won’t hit the earth. It will sail harmlessly past us. In 2022, NASA put that idea to the test. It sent a tiny spacecraft 7 million miles into space, for the express purpose of crashing into a known asteroid—to see if we could bump it into a different path. We quickly found out. This is the story of the DART (Double Asteroid Redirection Test) mission.

Hear from Dr. Richard Binzel, MIT professor. Dr. Elena Adams, lead engineer for NASA’s DART mission, and Dr. Lori Glaze, director of NASA’s planetary science division.

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