Transit of Venus
A good portion of the world was watching as Venus glided in front of the Sun for over six hours (June 5 - 6, 2012). SDO implemented specially planned operations to view the event in great detail in many wavelengths of light. The results were the best HD views of a transit ever taken. The image shown was taken in the 171 Angstrom wavelength of extreme UV light showing Venus' path across the Sun.
Numerous image and movie versions of the Venus transit as seen by all NASA solar imaging spacecraft can be found here: http://www.nasa.gov/mission_pages/sunearth/multimedia/venus-transit-2012.html.
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