An initial sequence of radar images of asteroid 2012 DA14 was obtained on the night of Feb. 15/16, 2013, by NASA scientists using the 230-foot (70-meter) Deep Space Network antenna at Goldstone, Calif. Each of the 72 frames required 320 seconds of data collection by the Goldstone radar.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/f...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/f...