APOD 4.01

STEREO B, a satellite some 1 million miles from Earth, recorded a lunar transit last week. The reason the Moon appears to be 1/4th the size seen from Earth is because the satellite is 4 times the distance from the Earth to the Moon away. Each frame of the movie is made up of 4 composite images, each done through a different filter. The Sun's rotation can be seen in the movie as well.