Mental Floss

Fly Low Over the Moon with NASA's GRAIL Probes

Erin McCarthy

Last month, NASA sent its twin GRAIL satellites crashing into the moon—and now, it’s released the final video from that mission, captured by educational cameras on board the probes.

According to Universe Today, the footage was shot three days before the crafts' planned impacts near the lunar north pole, when they were orbiting just 6.8 miles above the moon’s surface. The washing machine-sized GRAIL satellites—nicknamed Ebb and Flow—mapped lunar gravity and revealed that the Moon’s crust is much thinner than originally thought.