سیریوس -توپ آتشین صحرای Mojave

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تصویر پر نورترین ستاره ی آسمانhttp://antwrp.gsfc.nasa.gov/apod/image/0912/Geminid2009_pacholka850wp.jpg

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Explanation: Monstrously bright, this fireball meteor (http://www.amsmeteors.org/fireball/faqf.html#1) lit up the Mojave Desert sky Monday morning, part of this year's impressive Geminid meteor shower (http://spaceweather.com/meteors/gallery_13dec09.htm). Seen toward the southwest over rock formations near Victorville, California, a more familiar celestial background was momentarily washed out by the meteor's flash. The background includes bright star Sirius (http://stars.astro.illinois.edu/sow/sirius.html) at the left, and Aldebaran (http://stars.astro.illinois.edu/sow/aldebaran.html) and the Pleaides star cluster at the right side of the image. The meteor itself blazes through the constellation Orion (http://antwrp.gsfc.nasa.gov/apod/ap030207.html). Its greenish (http://antwrp.gsfc.nasa.gov/apod/ap020816.html) trail begins just left of a yellow-tinted Betelgeuse (http://stars.astro.illinois.edu/sow/betelgeuse.html) and points back to the shower's radiant in Gemini, just off the top of the frame. A rewarding catch for photographer Wally Pacholka, the spectacular image is one of over 1500 frames that he reports captured 48, mostly faint, Geminid meteors (http://antwrp.gsfc.nasa.gov/apod/ap091212.html).