掠日彗星
SUNGRAZING COMET
On Saturday morning, the sun had a comet for breakfast. The icy visitor from the outer solar system appeared with no warning on April 9th and plunged into the sun during the early hours of April 10th. One comet went in, none came out. The Solar and Heliospheric Observatory (SOHO) had a good view of the encounter:
週六早晨太陽有一粒彗星做早餐,冰冷的訪問者來自外太陽系,在4月9日沒有出現警告和在4月10日早上時段衝入太陽。一粒彗星衝進去,沒有東西走出來。太陽與日光層天文台(SOHO)看到好的遭遇:
Click to launch a movie
點擊開播電影
The comet was probably a member of the Kreutz sungrazer family. Named after a 19th century German astronomer who studied them in detail, Kreutz sungrazers are fragments from the breakup of a giant comet at least 2000 years ago. Several of these fragments pass by the sun and disintegrate every day. Most are too small to see but occasionally a big fragment like today's attracts attention.
彗星可能是掠日家族克羅伊茨 的一個成員,以詳細研究的19世紀德國天文學家命名,克羅伊茨掠日者是一個巨大彗星的解體碎片,至少2000年前。這些碎片中的幾塊每一天經過太陽和瓦解,大多數都是太小難以見到,但間中有像今天這樣大的碎片吸引注意力。
This has been an active year for big, bright sungrazers. There was one on Jan. 4th, one on March 12th, and now one today. Normally we see no more than 3 or 4 bright ones in a whole year; now we're seeing them almost once a month. It could be a statistical fluctuation or, maybe, a swarm of Kreutz fragments is nearing perihelion (closest approach to the sun). Stay tuned for doomed comets!
http://spaceweather.com/
沒有留言:
發佈留言