While millions of Earthlings watched the "blood moon" total lunar eclipse on March 13-14, the private Blue Ghost spacecraft caught an ultra-rare view of Earth blocking out the sun from the surface of the moon.

"Lunar eclipse is if you're on the side of the Earth that's facing the full moon, you will see the eclipse. The side of the Earth, so, in that sense, it's not rare. (We) get one every couple of years," astrophysicist Neil deGrasse Tyson said March 14 on TODAY. Tyson also explained just how the moon turns the shade of red it does.