[Urdu/Hindi] Why Did A Spacecraft Just Smash Into An Asteroid?

Sometime ago, NASA deliberately crashed a spacecraft into an asteroid. This asteroid, called Dimorphos, was not a threat to the Earth. However, this was mission, DART, was part of a planetary defense test, in case of a real threatening asteroid. Asteroids have of course crashed into Earth before, and one such asteroid was responsible for the extinction of dinosaurs. Please join astrophysicist Salman Hameed in exploring the threat of asteroids and why DART just crashed into Dimorphos in this episode.For the video of this podcast: https://youtu.be/xUnRHBwNSGw