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Saturday, August 11, 2012

Perseid meteor shower 2012 peaks tonight


Perseid meteor shower 2012: Video shows where to look for planetary alignment







Sometimes it is good to have a bit of a heads-up when it comes to stargazing, like in the case of the Perseid meteor shower that peaks in the early morning hours of August 12, otherwise one might miss something of interest. In the case of the Perseids, what one could have missed without a mention might have been the planetary alignment of Venus and Jupiter with the crescent moon. But would you know where they were in the night sky? Science@NASA put together a little video primer that shows you where to look for the planets while viewing the meteors streaking across the sky. All can be seen with the naked eye, but since the planets will appear as mere points of light and relatively motionless against the dark backdrop of space, it might be a plus for the amateur starwatcher to know where they are and just how they line up.



They align first on August 11. As the Perseid meteor shower seems to emanate from the constellation of Perseus (thus the name), the alignment will occur below the central emanation point in the Eastern sky in the early morning, with Venus holding a central position below the center of the dispersal region. Jupiter will be seen further up the sky to the viewer's right, and the crescent moon will finish the alignment in what appears to be roughly a 50 degree angle. The red giant star Aldebaran can be seen as well just slightly below and to the right of Jupiter. On August 12, as the meteor shower peaks, the crescent moon, which is waning, moves to place itself in between the two planets, which, given their distances from Earth, appear to be nearly stationary. On the following night -- and last of the alignment -- the crescent moon moves to a position relatively close to Venus but still between the second planet and the fifth.

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