40 years after the massive volcanic eruption of Mount St. Helens in Washington state, NASA reviews photography captured by Landsat satellites of the area from 1973 to 2019.
Video credit: NASA's Goddard Space Flight Center
Matthew R. Radcliff (USRA): Lead Producer
Aaron E. Lepsch (ADNET): Technical Support
Sean Healey (US Forest Service): Scientist
Zhiqiang Yang (US Forest Service): Scientist
Matthew R. Radcliff (USRA): Writer