156: Measuring a collision with Dr. Thomas

Professor Cristina Thomas  talks about NASA's first planetary defense mission:  DART . DART is a spacecraft that will impact a tiny asteroid moon. She explains why ground-based telescope observations are key to the mission's success.  Follow Prof. Thomas on  twitter !  Image Credit:  Northern Arizona University .

Professor Cristina Thomas talks about NASA's first planetary defense mission: DART. DART is a spacecraft that will impact a tiny asteroid moon. She explains why ground-based telescope observations are key to the mission's success.

Follow Prof. Thomas on twitter!

Image Credit: Northern Arizona University.