638K views · 5.5K reactions | On the 33rd anniversary of the Space Shuttle Challenger disaster, we remember the 7 crew members killed. We take a look back at Peter Jennings' reporting on the explosion on January 28, 1986. | Good Morning America | Facebook

On Aug. 25, 1997, NASA launched the Advanced Composition Explorer, or ACE satellite to study energetic particles travelling through space. Space History Archives👉https://space-com.visitlink.me/RSUG9h It lifted off from Kennedy Space Center in Florida on a Delta II rocket and spent the next three and a half months making its way to its orbital post near the L1 Lagrangian point, a point of gravitational equilibrium between Earth and the sun. There, the spacecraft is monitoring the stream of accel