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My writeup, with lots of photos, of my visit to the 70-meter dish at Goldstone for asteroid 2005 #YU55 flyby: http://bit.ly/ukJ3WV

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#Asteroid #YU55 is passing close to earth in about an hour. Woohoo! Get your telescopes ready....http://ow.ly/7ndDb

Multimedia - NASA

MT @NASA: Watch a six-frame animation of Goldstone radar mages of asteroid 2005 #YU55: http://go.nasa.gov/us1Ukc

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Cette nuit, je ne dors pas, je m'assure que #YU55 ne dévie pas de sa trajectoire :#astéroïde #porteavion

1.usa.gov/uoH430

RT @NASAJPL: Asteroid 2005 #YU55 comes closest to Earth at 3:28pm PT, ~200,000 miles above the Guatemalan coast. Map: http://is.gd/oRrjDd

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How radio telescopes get "images" of asteroids -- the Delay-Doppler technique: http://is.gd/QQ50PR #YU55