Subj : Space Weather To : All From : Roger Nelson Date : Wed Oct 02 2013 10:17:05 COMET ISON FLYBY OF MARS: Today, October 1st, Comet ISON will fly by Mars at a distance of only 0.07 AU. Red Planet satellites and rovers have a ringside seat for the flyby, and they will be snapping pictures despite a shutdown of the US government. (Apparently, Curiosity has been designated "essential personnel.") Scroll past the Magnificent Eruption for more information. INCOMING CME, CHANCE OF STORMS: NOAA forecasters estimate a 45% chance of polar geomanetic storms on Oct. 2nd when a CME is expected to hit Earth's magnetic field. SOHO photographed the CME leaving the sun on Sept. 30th traveling 900 km/s (2 million mph): The CME was hurled into space by the eruption of a magnetic filament from the sun's northern hemisphere. One movie from NASA's Solar Dynamics Observatory shows the event in the context of the whole sun. Another movie zooms in for a closeup. It shows the filament ripping through the sun's atmosphere and leaving behind a beautiful "canyon of fire." Forecasters expect the CME to deliver a glancing blow to Earth's magnetosphere, sparking G1- to G2-class geomagnetic storms around the poles. High-latitude sky watchers should be alert for auroras on Oct. 2nd and 3rd. Regards, Roger --- D'Bridge 3.94 * Origin: NCS BBS - Houma, LoUiSiAna (1:3828/7) .