Eclipses in Space

Solar Dynamics Observatory, in geosynchronous orbit, catches several solar eclipses from space each year


High in orbit above the Earth, the Solar Dynamics Observatory watches the Sun year-round, providing stunning stellar views that go unbroken except during a few special times each year. Because the SDO stays relatively fixed over one part of the planet in a geosynchronous orbit, the satellite goes through two annual "eclipse seasons." For a few weeks twice each year, part of SDO's view each day will be blocked by the Earth. And, three times a year, the Moon will get in the way.