Originally posted here:
The Solar Dynamics Observatory is a NASA satellite that observes the Sun 24 hours a day. It orbits the Earth, placed carefully so that it takes 24 hours to circle the Earth once — what we call a geosynchronous orbit. This maximizes its output, and allows scientists to squeeze as much data from it as possible. But, twice a year, the geometry of SDO’s orbit aligns in such a way that the Earth itself… Broadcasting platform : YouTube Source : DiscoverMagazine Discovery Date : 13/03/2012 18:55 Number of articles : 2
When the Earth photobombs the Sun | Bad Astronomy
