Perséides Meteor Shower Peaks Tonight: Comment regarder
- Saturday, 11 Août, 2012 20:57
NEW YORK, États-Unis (defend.ht) - Si vous regardez une pluie d'étoiles filantes toute l'année, puis prendre le tir Perséides étoiles affichage cours de la nuit. Ce week-end, les sommets annuels de douche de météores des Perséides, envoyant des centaines d'étoiles filantes qui volent dans le ciel de la nuit dans ce que les experts appellent la meilleure douche de l'année.
August 2012 Perseid Meteor Shower and Sky Show
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"We expect to see meteor rates as high as a hundred per hour," Bill Cooke of NASA's Meteoroid Environment Office said in a statement. "The Perseids always put on a good show."
To see the Perseid meteor shower, all you need are your naked eyes and a relatively dark spot to view from. Avoid light pollution if at all possible, as city lights can obscure all but the brightest meteors. And weather conditions such as clouds can also dampen the sights, so if you catch a clear weather window, take advantage of it.
The peak of the meteor shower should occur between midnight and 9 a.m. EDT (0400 and 1300 GMT, or UT) on Sunday, Aug. 12. However, viewing during dark hours between now and the beginning of next week should provide ample meteor sights. The dark hours between Saturday night and Sunday morning should be especially fruitful for meteor hunting.
The shooting stars will appear to radiate from the constellation Perseus, named after the ancient Greek hero — hence the name Perseids.
This peak occurs as planet Earth passes through the trail of debris left behind by comet Swift-Tuttle. Bits of rock and ice from the comet slam into Earth's atmosphere, burning up to create short-lived streaks of light that we see as shooting stars. Our planet meets with Swift-Tuttle's trail every year in late July or early August.
This year's pass through the Perseids will be extra-special because of a celestial show going on now. The bright planets Jupiter and Venus, along with the crescent moon, are visible in the night sky alongside the Perseids, offering an especially dazzling sight for stargazers. These planets, and the moon, will be aligned in the eastern sky before dawn Aug. 11 to Aug. 13.
Luckily for observers, the moon should not be bright enough to obscure most meteors, but should provide a complementary celestial wonder to behold.
"Sky watchers say there's nothing prettier than a close encounter between the slender crescent moon and Venus — nothing, that is, except for the crescent moon, Venus and a flurry of Perseids," astronomer Tony Phillips wrote on the Science@NASA website.