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A Glimmer in the Eye of WISE
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A Glimmer in the Eye of WISE

April 18, 2012
Asteroid 2010 TK7 is circled in green, in this single frame taken by NASA's Wide-field Infrared Survey Explorer, or WISE. The majority of the other dots are stars or galaxies far beyond our solar system. Astronomers discovered this object -- the first known Earth Trojan asteroid -- after sifting through asteroid candidates identified by WISE. This image was taken in infrared light at a wavelength of 4.6 microns in Oct. 2010.