Celestial show of the best this year.

( Aqueous ) is coming soon Aeson comet high calling of " heavenly bodies the best show this year " . It is expected that rare figure of the " comet " is visible in the sky east of the dawn even with the naked eye in late November . And fly away to the solar system as it is outside , it's attention to " shine the first and last " of the comet that do not come back again .Observation team in September 2012 , and Russia in the international scientific optical network to discover , Aeson comet was named abbreviation of the net from " ISON " . Were seen to have come from the " Oort cloud ," a collection of small bodies of countless that are located on the edge of the solar system , and that sends down a comet , around November 29 , about the diameter of the ( Sun about 1.2 million km from the surface of the sun expected to be closest to 80% ) . Expected to gather as a " great comet " because it approaches the sun rare in recent years . Not extend to the brightness of the 1965 " Ikeya Seki comet " , but there is also estimated the length of the tail is to grow to 20 minutes full moon .Can be in the dust , such as grains of sand and ice , comets are often described as " dirty snowball " . The approaches to the sun , to spread these , such as dust and melted in the heat , the tail of the comet can be . Bright as it approaches the sun , tails longer . If you look in more detail in the telescope , there are two types of tail . It is bluish " ion tail " that ions with a white " dust tail " light of the sun reflected in the comet dust is scattered , resulting ice is evaporated shines .Is located in Mars near the morning sky from early dawn , observation reported by the telescope is now one after another . You can observe with the naked eye , ( it is hard to see it is too close to the sun for several days of the end of November ) until the middle of December from around late November . Observed brightness will become 1.5 , such as about minus minus - 6 and the like , there is a possibility to exceed the minus 4, etc. of Venus brightest moon other than . Story " of that comet is distinctive , very unsure of the shape and brightness until it comes into view actually . It is one of the elements that are intriguing ," said Watanabe, deputy board length of National Astronomical Observatory of Japan is predictable to put expectations in becoming a great comet .
Without missing the " brightness of the first and last time " , I want to burn in this eye .



「今年最高の天体ショー」の呼び声高いアイソン彗星（すいせい）が間もなくやってくる。「ほうき星」の珍しい姿が１１月下旬には肉眼でも明け方の東方の空に見えると予測される。そのまま太陽系外へ飛び去り、二度と戻って来ない彗星の「最初で最後の輝き」に注目だ。
　アイソン彗星は２０１２年９月、国際科学光学ネットワークのロシアなどの観測チームが発見し、同ネットの略称「ＩＳＯＮ」から命名された。太陽系の外れにあり、彗星を降らせているとされる無数の小天体の集まり「オールトの雲」から来たとみられ、１１月２９日ごろ、太陽の表面から約１２０万キロ（太陽の直径の約８割）に最接近する見込み。近年では珍しく太陽に近づくことから「大彗星」として期待が集まる。１９６５年の「池谷・関彗星」の明るさには及ばないものの、尾の長さが満月２０個分に伸びるとの推定もある。
　彗星は氷と砂粒などのちりででき、「汚れた雪だるま」とも形容される。太陽に近づくにつれ、熱で溶けてちりなどをばらまき、ほうき星の尾ができる。太陽に近づくほど明るく、尾も長くなる。望遠鏡で詳しく観察すると、尾は２種類ある。彗星がばらまいたちりに太陽の光が反射した白い「ちりの尾」と、氷が蒸発して生じるイオンが光る青っぽい「イオンの尾」だ。
　今は未明から明け方の空の火星近くにあり、望遠鏡による観測報告が相次いでいる。肉眼で観察できるのは、１１月下旬ごろから１２月中旬ごろまで（１１月末の数日間は太陽に近すぎて見にくい）。明るさはマイナス６等〜マイナス１・５等程度になるとみられ、月以外で最も明るい金星のマイナス４等をしのぐ可能性もある。国立天文台の渡部副台長は「彗星というのは非常に個性豊かで、実際に見えてくるまで明るさや形ははっきり分からない。それも興味をそそられる要素の一つ」と話し、予測通りの大彗星になることに期待を込める。
　「最初で最後の輝き」に見逃すことなく、この目に焼き付けたいですね。