UARS is down, but NASA doesn’t know where

UPDATE: a later statement from NASA below says N. Pacific off the U.S. West coast, teleconference scheduled. See below. NASA confirms that the Upper Atmosphere Research Satellite (UARS) has entered Earth’s atmosphere and burned/broken up. Some Twitter reports say debris was seen over eastern Canada, but unconfirmed as of this writing. No video or photos…

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It’s all UARS

UPDATE from NASA 11:PM Fri: NASA says it continues to wait for final confirmation of re-entry. “If debris fell on land (and that’s still a BIG if), Canada is most likely area,” the space agency just said. Update #12 Fri, 23 Sep 2011 07:50:07 PM PDT As of 10:30 p.m. EDT on Sept. 23, 2011,…

UV low during recent solar minimum

From the American Geophysical Union: Ultraviolet solar irradiance was low during recent solar minimum Solar irradiance, which varies with the 11-year solar cycle and on longer time scales, can affect temperature and winds in the atmosphere, influencing Earth’s climate. As the Sun currently wakes up from a period of low sunspot activity, researchers want to…