掠过木星的木卫一
[align=center][color=red][b]影像提供:[/b] [/color][url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://ciclops.lpl.arizona.edu/&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhjZJEovrlWVZ8Cckgw-YgN4nt48gQ][color=red]Cassini Imaging Team[/color][/url][color=red] , [/color][url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.jpl.nasa.gov/cassini/&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhjXUl-gfbzTyq8pTe8chHDuhCF4Qw][color=red]Cassini Project[/color][/url][color=red] , [/color][url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.nasa.gov/&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhj_xlqOJA-k78QP_ky3FPssLJYzsQ][color=red]NASA[/color][/url] [/align][img]http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/image/0104/iojup_cassini_big.jpg[/img]
[color=green][b]说明:[/b] [/color][url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.seds.org/nineplanets/nineplanets/io.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhgRas29ZV7Kebde4rBUp5cR84iaBA][color=green]木卫一(Io,读音为"EYE-oh")[/color][/url][color=green]是木星的大型卫星之一，也是太阳系内[/color][url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://volcano.und.nodak.edu/vwdocs/planet_volcano/other_worlds.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhiAcWFZOluDMOOKJkQJx37VhzRoeg][color=green]火山活动最活跃的天体[/color][/url][color=green] 。 [align=left]它到底有多大呢？ [/align][align=left]它的大小和地球唯一的[url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap010127.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhgRN6yCSr6UdiEyNa7tQ2cpFE8Ytw]天然卫星[/url]月亮差不多，直径足足有3600公里。 [/align][align=left]上面[url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://ciclops.lpl.arizona.edu/ciclops/images_jupiter.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhghreqenbbtOH8aSIu-C_aRq9UH1A]这张影像[/url] ，是由卡西尼号探测船所拍摄的。 [/align][align=left]在上个千年底拍摄时， [url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.jpl.nasa.gov/galileo/moons/io.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhjPpoLXQWQQAwCiVvA7iQgJSqqlsw]木卫一[/url]正好掠过巨大的[url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.seds.org/nineplanets/nineplanets/datamax.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhjzgyPUWMdEzuW5_jppJGr1cDhteQ]木星[/url]和卡西尼号之间，当时[url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.jpl.nasa.gov/cassini/english/spacecraft/&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhgmIZs9LdAWa01b6n3CripLXztpGQ]卡西尼号(Cassini)[/url]离木星有一千万公里远。 [/align][align=left]从木卫一在影像中的[url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://nssdc.gsfc.nasa.gov/planetary/factsheet/jupiterfact.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhhjeQy0L1-la7NRgnT-XaR0PWCicw]相对大小[/url] ，不难看出[url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.jpl.nasa.gov/jupiterflyby/&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhhx3xskfzC5w73-6QTC6uyuWJHm7g]木星[/url]这颗太阳系最大的行星，实在是个庞然大物。 [/align][align=left]虽然在[url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://photojournal.jpl.nasa.gov/cgi-bin/PIAGenCatalogPage.pl%3FPIA02879&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhh2k_-3msnK5xwRuE2fwyEjwTNSvA]这张照片[/url]里，木卫一像是漂浮在木星的云层上方，实际它是以距木星中心四十二万公里的距离飞掠而过，每42小时绕[url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://nssdc.gsfc.nasa.gov/planetary/factsheet/joviansatfact.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhhBSLRBa3v3Lx0puTHzjV5JOQptGg]木星[/url]一周。 [/color][/align][align=left][color=green]因此它和[/color][url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap010215.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhgqHk_F0Ciy8Lwx83F_aqylGTC7Kg][color=green]木星云顶[/color][/url][color=green]的距离将近有35万公里，大约和[/color][url=http://203.208.39.99/translate_c?hl=zh-CN&sl=zh-TW&u=http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/ap980904.html&prev=/search%3Fq%3Dnasa%25E6%25AF%258F%25E6%2597%25A5%25E4%25B8%2580%25E5%259B%25BE%26complete%3D1%26hl%3Dzh-CN%26newwindow%3D1%26sa%3DG&usg=ALkJrhjbJUgT9-v7DKoOVPSdN1Ru9z4oyw][color=green]地球与月球[/color][/url][color=green]的距离约不多。[/color]::42:: ::42:: ::42:: [size=2][color=magenta](转自成大天文学教室)[/color][/size][/align] 不错 图片确实很漂亮
pretty
pretty pretty pretty 我在幻想什么时候地面的望远镜可以有这个效果 呵呵 ::070821_21.jpg:: 好图，不错 了不起，真壮观::070821_09.jpg:: 好图~拍摄的清晰明快，效果很不错的！！ 壮观的像假的::luguo:: ::luguo:: ::luguo:: yct32.gif 好图，真壮观 [quote]原帖由 [i]星河寻梦///[/i] 于 2008-8-24 09:41 发表 [url=http://www.astronomy.com.cn/bbs/redirect.php?goto=findpost&pid=1003126&ptid=95871][img]http://www.astronomy.com.cn/bbs/images/common/back.gif[/img][/url]我在幻想什么时候地面的望远镜可以有这个效果 呵呵 [/quote]
同感::070821_18.jpg::
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