搜尋此網誌

2010年6月7日星期一

被拍:壯觀的時刻當太空導彈擊中木星

ANOTHER JUPITER IMPACT JUNE 3, 2010
另一次的木星影響 2010年6月3日

西元2010年06月04日


被拍:壯觀的時刻當太空導彈擊中木星
Pictured: spectacular moment space missile smashes into Jupiter
The spectacular moment that a space missile smashed into the planet Jupiter has been captured by amateur astronomers for the first time.
那壯觀的時刻,當一顆太空導彈擊中木星,已首次被業餘天文學家捕捉。
By Andrew Hough
Published: 9:00AM BST 05 Jun 2010

This image shows an amateur astronomer's view of Jupiter Thursday June 3, 2010, who said he witnessed a bright flash, upper left, from an object hitting the Jovian surface Photo: AP
此圖片顯示一位業餘天文學家的木星景觀,在2010年6月3日星期四,他說他目睹一明亮閃光,左上角,來自一件物體擊中木星的表面 照片:美聯社

The stargazers witnessed the brilliant flash from the cosmic collision from sites in Australia and the Philippines on Friday.
觀星者從澳洲和菲律賓的地點,週五見證輝煌的來自宇宙碰撞的閃光,。
Anthony Wesley, an Australian computer programmer, first noticed the collision in Jupiter's cloud tops and notified other astronomers.
一名澳洲電腦程式員安東尼韋斯利,首先注意到在木星雲頂的碰撞,並通知其他天文學家。
Christopher Go, another amateur astronomer from the Philippines, then independently photographed and videoed Friday’s incident.
另一名賓業餘天文學家來自菲律的克里斯托弗高,然後將週五的事件獨立地拍照和錄像。
Experts said the amazing impact was either a comet or an asteroid.
專家說,令人驚訝的影響,要么是彗星或小行星。
Video of the incident has been uploaded to YouTube.
事件的視頻已上載至YouTube。
"When I saw the flash, I couldn't believe it," said Mr Wesley, who is well respected in the astronomy field.
“當我看到閃光,我簡直不敢相信,”韋斯利先生說,他在天文學界是備受尊敬的。
"The fireball lasted about 2 seconds and was very bright.
“火球持續約 2秒和十分光亮。
"There were no visible remains at the impact point for the next half hour or so, until sunrise put an end to the imaging."

Mr Go added: “I still can't believe that I caught a live impact on Jupiter,"

Their discovery came after Nasa scientists disclosed that they had had solved the mystery behind a strange “bruise” on Jupiter.

Using an infrared telescope on Hawaii, Nasa scientists found evidence that Jupiter was apparently struck near its south pole, and credited Wesley.

Mr Wesley, from Broken Hill, in central Australia, first spotted the scar the size of the Pacific Ocean that was left near Jupiter's south pole last year.

Using an infrared telescope on Hawaii, NASA scientists found evidence that Jupiter was struck, crediting Mr Wesley.

Follow-up observations made with the Hubble space telescope suggested it was made by an asteroid with a force equivalent to a few thousand nuclear bombs.

Hubble is certain to be switched from other duties again to photograph Jupiter and give professional astronomers as much information as possible about the new collision.

The latest hit near the equator has not left any visible mark so far, but astronomers are on the lookout.

The absence of a detectable “gash”, and the short impact time, has led scientists to believe Jupiter was likely struck by a meteor.

"We've never seen a meteor slam into Jupiter," said Glenn Orton of Nasa's Jet Propulsion Laboratory.

With these impacts now apparently less rare than once imagined, astronomers will also be re-examining observations of light and dark spots on Jupiter in historical records.

In 1686, Italian astronomer Giovanni Cassini noted a dark spot on Jupiter that was about the same size as the largest bruise seen after Comet Shoemaker-Levy hit the planet in 1994.

A British Astronomer Royal, George Airy, saw another dark spot that recorded as being nearly four times bigger than shadows cast by Jupiter's main Galilean moons

http://www.telegraph.co.uk/science/space/7805009/Pictured-spectacular-moment-space-missile-smashes-into-Jupiter.html


澳天文愛好者拍到神秘天體撞上木星照片
2010年06月07日08:12
在安東尼·韋利斯拍到的照片的左上角,游星撞上木星表面的亮光清晰可見。
美國宇航局哈勃望遠鏡的照片顯示去年7月發現的黑色疤痕在逐漸淡化。

北京時間6月7日消息,據國外媒體報道,澳大利亞天文愛好者、電腦程序員安東尼·韋斯利首次觀測到一個天體撞到木星上。他拍到了一個明亮的光點,並向職業天文學家和天文愛好者通報了這次獨一無二的碰撞。

  韋斯利說:“看到閃光時我簡直不敢相信,火球持續了大約2秒,而且非常明亮。”這之前美國宇航局剛剛宣布已揭開木星“擦傷”的秘密,而這一“擦傷”也被韋斯利拍到。韋斯利還在去年拍到了木星上的這個有太平洋大小的“疤痕”,這個“疤痕”被認為是一顆小游星撞上了這顆氣體行星形成的。

  雖然發生在木星赤道附近的這次最新撞擊目前未留下任何可見痕跡,但天文學家仍在密切關注。因為沒有出現可見痕跡和碰撞時間短暫,所以科學家認為撞上木星的可能是一顆流星。美國宇航局噴氣推進實驗室的格雷恩·奧頓說:“我們從未看到過流星撞上木星。”通過這次撞擊,天文學家應該可以更好地了解漂浮在太陽系外層的碎片究竟有多大。

  去年7月19日,神秘天體撞上木星,在木星表面留下太平洋大小的黑色疤痕。通過哈勃太空望遠鏡拍攝的照片,美國宇航局的宇航員對木星上留下的這一疤痕和1994年彗星撞擊留下的疤痕進行了比較,他們認為,留下這一痕跡的是一顆直徑為1600英尺(488米)的游星。有趣的是,這次最新撞擊恰好是彗星P/Shoemaker-Levy 9撞擊木星裂成20多塊之后15年。

  美國宇航局日前公布了對哈勃望遠鏡拍攝圖片的分析,並指出去年游星撞擊的沖力可能相當於數千顆核彈爆炸。天文學家相信,這一罪魁禍首是一顆直徑為1600英尺(488米)的游星,而且“擦傷”首次顯示游星而不是彗星撞擊行星的即時結果。

  去年,韋利斯在靠近堪培拉的穆任百特曼鎮自家后院使用自制望遠鏡看到了這一黑色疤痕。他表示,他當時跑出跑進觀看英國高爾夫公開賽決賽,就是在這期間他發現了這個疤痕。他說:“我簡直不敢相信,我認為‘這是前所未有的事。然后我意識到木星實際上是被什麼東西撞了。’”

  發生在2009年的這次撞擊相當於數千核彈爆炸。美國科羅拉多州玻爾得市空間科學協會的海迪·哈梅爾帶領研究組使用哈勃望遠鏡拍攝了幾個撞擊位置的照片。她說:“這一獨特事件讓我們驚訝,我們隻能看到這次撞擊的結果,但是,幸運的是我們的確保留有1994年的哈勃觀測資料,當時拍到了撞擊現象的整個范圍,包括撞擊前觀察到的天體狀態。”

  哈梅爾表示,發生在2009年的撞擊証明了天文愛好者觀察工作的重要。她說:“這一事件很好地說明了天文愛好者和職業天文工作者可以進行合作。”美國宇航局表示,木星碰撞表明太陽系是一個“騷亂”的場所。1994年到2009年之間的騷亂尤其驚人,因為木星撞擊曾被認為每隔數百年到數千年才發生。(孝文)

來源:新浪科技
http://scitech.people.com.cn/BIG5/11797090.html

哈勃揭秘:撞擊木星天體係一塊太空岩石

沒有留言: