NASAのインスタグラム(nasa) - 8月12日 10時03分

Watch the skies! ☄️ The Perseid meteor shower is here, peaking in the pre-dawn hours of Aug. 12. Perseid meteors, caused by debris left behind by the Comet Swift-Tuttle, began streaking across the skies in late July. The Perseids are best seen between about 2 a.m. your local time and dawn. The Moon rises at around midnight, so its brightness will affect the peak viewing window. However, even though the Moon’s phase and presence will keep the frequency of visible meteors lower, there is still nearly one meteor every two minutes during the peak. A Perseid is seen streaking across the sky in this 30 second exposure, taken on Aug. 13, 2015 in Spruce Knob, West Virginia during the annual meteor shower.Can't get outside? Weather not cooperating? NASA TV has you covered. Tune in starting at 9 p.m. EDT (0100 UTC) through sunrise for a Perseids livestream from our Meteor Watch camera at @nasa_marshall: www.nasa.gov/liveCredit: NASA/Bill Ingalls #Perseids #meteors #MeteorShower #stargazing #skywatching #nightsky #nasa

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