“一起去看流星雨”是很多年轻情侣的浪漫选择，在中国传统情人节“七夕”来临前夕，英仙座流星雨光临地球，希望能度过甜蜜节日的朋友们一定不要错过喔! 8 N) N. D( T/ E" {0 ~4 V1 h( P
Sky-watchers could be in for "fantastic views" over the next two days as the Perseid meteor shower reaches its peak.
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According to Nasa, the shower could produce a display of up to 80 meteors per hour.
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"A waxing crescent moon will set before the shower becomes active, setting a perfect stage for meteor watching," said the US space agency on its website.
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! G, e. g1 Z( e" z* E% c+ Z Experts are urging people to head away from city lights for the best views.
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John Mason from the British Astronomical Association (BAA) told BBC News: "Weather-permitting, we should be in for a very good show across the UK., x& W) [* w1 B& a6 J {& L
: |0 W& L9 I* y4 X! [ "The shower has been ongoing for a week now and we have already seen some very bright meteors whizzing overhead."
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* i7 U+ {$ a+ E9 O The Perseid meteor shower is caused by debris from the comet Swift-Tuttle.* U1 Y& X- b& M3 x9 a
/ H/ z( e( U! u& ?$ ?: g Every 133 years, the huge comet swings through the inner part of our Solar System and leaves behind a trail of dust and gravel.- j0 O' ?6 K C6 c( y. E
/ a$ g* {1 V) F. d) d& j When Earth passes through the debris, specks hit our atmosphere at 140,000mph and disintegrate in flashes of light.
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; L% ?: j t/ u( u( v( X The Royal Astronomical Society (RAS) said the relatively warm summer nights would make this meteor shower one of the more comfortable to watch.+ N/ I! l0 u9 N
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The annual display is caused by debris from the comet Swift-Tuttle
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* The meteors are called the Perseids because they appear to fly out of the constellation Perseus
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* The yellow dot marks the Perseid radiant. The meteors can appear in any part of the sky, but all of their tails will point back to there
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! F' c" o5 A$ s; l* f * The best views of the meteor shower are likely to be in the Northern Hemisphere |
发表于 2012-8-14 23:21:39
