ASTEROID FLYBY: Today, an asteroid as wide as three football fields is flying past Earth. At closest approach, 2012 QG42 will be 2.8 million km (7.4 lunar distances) away, so there is no danger of a collision. Nevertheless, it is close enough for backyard astronomers to track using large amateur telescopes; the space rock is glowing like a 14th magnitude star. [movie] [3D orbit] [ephemeris]
ROCKET EXHAUST: The White Sands Missile Range in New Mexico conducted a test of the Patriot interceptor yesterday, producing iridescent rocket exhaust visible as far away as Phoenix AZ, Las Vegas NV, and Salt Lake City UT. David Blanchard photographed the display from Flagstaff, Arizona:
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The test proceeded as follows: A Juno rocket was launched from Fort Wingate in Gallup, New Mexico. This served as the target for another missile, the Patriot Advanced Capability 3 interceptor, launched shortly thereafter from White Sands. A press release from White Sands confirmed the test and stated that "the
Juno performed as expected."