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| التقويم |
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#812
2013-08-13, 01:36 AM
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#813
2013-08-13, 01:49 AM
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السنغال + مالي (غرب افريقيا)
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#814
2013-08-13, 01:54 AM
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#815
2013-08-13, 01:57 AM
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يـــنبع الان
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#816
2013-08-13, 02:01 AM
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#817
2013-08-13, 02:14 AM
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 Perseid Meteor This Perseid fireball meteor was observed in the skies over Chickamauga, Ga., on Aug. 11, 2013, at 2:14:49 a.m. EDT. It was also recorded by four other cameras in the NASA All Sky Fireball Network. The annual Perseid meteor shower peaks on Aug.11 and 12, 2013, filling the sky with streaks of light. The big meteor showers like the Perseids, and later the Leonids in November, are caused when Earth and its atmosphere travels through a region of the sky filled with left over debris lost by a particular comet. In the case of the Perseids, the small fragments were ripped off the tail of comet Swift-Tuttle, which orbits the sun once every 130 years. Image Credit: NASA/MSFC/MEO صورة جميلة من وكالة ناسا لأحدى شهب البرشاويات اثناء دخولها الغلاف الجوي للكرة الارضية قبل يومين
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#820
2013-08-13, 02:33 AM
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العرض العادي
