VIDEO: NASA launched its first-ever test mission to defend Earth from asteroids

  • On November 23, NASA launched a mission to test deflecting an asteroid from colliding with Earth.
  • The probe, known as DART, is expected to intercept an asteroid 6.8 million miles away in late 2022.
  • If the mission succeeds, NASA could incorporate DART into its larger planetary-defense strategy.

On November 23, NASA launched a mission to test deflecting an asteroid from colliding with Earth. The probe, known as DART, is expected to intercept an asteroid 6.8 million miles away in late 2022. If successful, it could become part of NASA’s planetary-defense strategy.