SOLAR FLEET PICKS UP COMET ISON:

Because NASA's twin STEREO probes are designed to observe the sun, they can see sundiving comets even when the glare becomes intense. Yesterday, Comet ISON joined Earth, Mercury, and Comet Encke in the field of view of STEREO-A's Heliospheric Imager. Comet ISON is plunging toward the sun and brightening as it heads for a perilous close encounter on Nov. 28th.