mant[楼主]

Long Stem Rosette
长梗玫瑰
Credit & Copyright: Adam Block (Caelum Observatory) and Tim Puckett
影像提供及版权：Adam Block (Caelum Observatory) and Tim Puckett
Explanation: The Rosette Nebula (aka NGC 2237) is not the only cosmic cloud of gas and dust to evoke the imagery of flowers. But it is the one most often suggested as a suitable astronomy image for Valentine's Day. Of the many excellent Rosette Nebula pictures submitted to APOD editors, this view seemed most appropriate, with a long stem of glowing hydrogen gas in the region included in the composition. At the edge of a large molecular cloud in Monoceros, some 5,000 light years away, the petals of this rose are actually a stellar nursery whose lovely, symmetric shape is sculpted by the winds and radiation from its central cluster of hot young stars. The stars in the energetic cluster, cataloged as NGC 2244, are only a few million years old, while the central cavity in the Rosette Nebula is about 50 light-years in diameter. Happy Valentine's Day!
说明：玫瑰星云（也被称为NGC2237）不是宇宙尘埃星云中唯一演变得像花朵图案的星云。但它是最能代表情人节的天文图案。在众多APOD编者拍摄到的美妙玫瑰星云影像中，这张影像是最合适的，在这张合成影像中由一条炽热氢气形成的长梗。星云位于麒麟座巨大分子云的边缘，距离我们大约5,000光年远，而玫瑰的花瓣实际上就是一个恒星孕育场，而其可爱而对称的形状是由于中央年轻炽热恒星团发出的恒星风和放射线侵蚀而成。高能恒星团（被归类为NGC2244）内的恒星年龄只有数百万年，而玫瑰星云中央的空洞直径约50光年。

rosette_abtps_v.jpg (417.52 KB)

2008-5-22 16:24

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遥远的星辰，因为灰色的天空而失去了颜色。然而，在我们目光的远处，它们，依旧灿烂~

[ 本帖最后由 mant 于 2008-5-22 16:26 编辑 ]

mant[楼主]

引用:

原帖由 九日少爷 于 2008-5-22 08:46 发表
好东西！我顶！！！真的很漂亮～～～想去宇宙啊～哪怕只看看地球呢

感谢留言的大力支持~

总是生活在渺小里的我们，不知不觉已经被渺小淹没，换个角度看渺小，才会找回梦想。

mant[楼主]

The Eagle Nebula in Hydrogen Oxygen, and Silicon
在氢，氧和硅元素特征光下拍摄的老鹰星云

Credit & Copyright: IAC, Daniel Lopez
影像提供：IAC, Daniel Lopez

Explanation: Bright blue stars are still forming in the dark pillars of the Eagle Nebula. Made famous by a picture from the Hubble Space Telescope in 1995, the Eagle Nebula shows the dramatic process of star formation. To above picture taken by a 0.8-meter telescope in the Canary Islands captures part of M16, the open cluster of stars that is being created. The high amount of detail in the above image results from it being taken only in specific colors of light emitted by hydrogen, oxygen, and silicon. The bright blue stars of M16 have been continually forming over the past 5 million years, most recently in the famous central gas and dust columns that have been informally dubbed the Pillars of Creation and the Fairy. Light takes about 7,000 years to reach us from M16, which spans about 20 light years and can be seen with binoculars toward the constellation of the Serpent (Serpens).
说明：明亮的蓝色恒星仍不停地在老鹰星云内黑暗气柱中形成。老鹰星云之所以出名是因为哈勃太空望远镜在1995年拍摄的一张影像，其中显示了老鹰星云内恒星生动的形成过程。上面这张影像是在加那利群岛上利用0.8米望远镜拍摄到的部分M16，其中疏散星团正在形成。上面影像中高清晰的画面是因为影像是在氢，氧和硅元素发出的特征光下拍摄的。M16内明亮的蓝色恒星在过去的500万年内陆续的形成，最近，著名的中央气体尘埃柱被戏称为恒星诞生地或是仙女。M16发出的光需要经过大约7,000年时间才能被我们看到，它覆盖大约20光年，在巨蛇座方向上，通过双筒望远镜就能看到它。

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2008-5-22 16:30

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给我一双夜的眼睛，让我在黑夜里看着你的模样。

[ 本帖最后由 mant 于 2008-5-22 16:42 编辑 ]

mant[楼主]

ISS: Sunlight to Shadow
国际空间站：白天到黑夜

Credit & Copyright: Till Credner, AlltheSky.com
影像提供及版权：Till Credner, AlltheSky.com

Explanation: Orbiting 400,000 kilometers above the Earth, the Moon slid into Earth's shadow to begin last week's total lunar eclipse. Of course the International Space Station (ISS) slides into Earth's shadow every 90 minutes, the time it takes it to complete one orbit at an altitude of about 400 kilometers. Recorded near sunset on February 7, looking toward the north, this composite of 70 exposures shows the trail of the ISS (with gaps between exposures) as it moved left to right over the city of Tübingen in southern Germany. Beginning in sunlight on the left, the ISS vanishes as it enters Earth's shadow at the far right, above the northeastern horizon. As seen from Tübingen, the passage took about 4 minutes. Clicking on the image will download a time-lapse animation (mpg file) based on the individual exposures that includes a plane flying along the horizon.
说明：位于地球外40万公里轨道上的月球，慢慢地进入了地球的阴影，拉开上周月全食的序幕。当然，国际空间站（ISS）每90分钟就会进入地球阴影，它在大约400公里的高空完成了一次轨道绕行。上面这张影像是在2月7日日落时分向北拍摄的，这张影像经过70张曝光影像合成，其中显示了国际空间站从德国南部城市蒂宾根上空，自左向右移动的轨迹（存在曝光间隔）。国际空间站从左侧阳光能找到的地方开始，慢慢消失在最右方地球阴影内，也就是城市东北方地平线上空。从蒂宾根看去，此次国际空间站通过大约持续4分钟。，

iss07feb08_credner_p.jpg (154.93 KB)

2008-5-22 16:47

附件里的影像就是这段由单个影像组成的延时动画（mpg文件），其中沿着地平线有一架飞机飞过。

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在我们头顶，天使们接近了众神的宫殿，俯视着众生的摇篮

[ 本帖最后由 mant 于 2008-5-22 16:56 编辑 ]

mant[楼主]

Sand Dunes Thawing on Mars
火星上消融中的沙丘

Credit: HiRISE, MRO, LPL (U. Arizona), NASA
影像提供：HiRISE, MRO, LPL (U. Arizona), NASA

Explanation: What are these strange shapes on Mars? Defrosting sand dunes. As spring now dawns on the Northern Hemisphere of Mars, dunes of sand near the pole, as pictured above, are beginning to thaw. The carbon dioxide and water ice actually sublime in the thin atmosphere directly to gas. Thinner regions of ice typically defrost first revealing sand whose darkness soaks in sunlight and accelerates the thaw. The process might even involve sandy jets exploding through the thinning ice. By summer, spots will expand to encompass the entire dunes. The Martian North Pole is ringed by many similar fields of barchan sand dunes, whose strange, smooth arcs are shaped by persistent Martian winds.
说明：火星上这些奇怪的形状是什么？那是消融中的沙丘。随着火星北半球春天的临近，上面影像中极点附近的沙丘开始慢慢消融了。实际上，二氧化碳和冰水会直接升华为气体，进入稀薄的大气层。冰层较薄的地区最先开始消融，而后露出沙子，影像中那些黑色的沙丘吸收了太阳光并加速了冰层的消融。在这个过程中，通过稀薄的冰层甚至可能会发生气沙喷流。到了夏天，这些斑点扩大，将包围整个丘陵。火星北极被许多类似的弧形沙丘包围着，由于一直不断吹着的火星风侵蚀出了这样奇怪而又平滑的形状。

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2008-5-22 16:57

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不是天上宫阙，今夕是何年。

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The International Space Station Expands Again
国际空间站再次扩建

Credit: STS-122 Shuttle Crew, NASA
影像提供：STS-122 Shuttle Crew, NASA

Explanation: The developing International Space Station (ISS) has changed its appearance again. Last month, the Space Shuttle orbiter Atlantis visited the ISS and added components that included the Columbus Science Laboratory. The entire array of expansive solar panels is visible in this picture taken by the Atlantis Crew after leaving the ISS to return to Earth. The world's foremost space outpost can be seen developing over the past several years by comparing the above image to past images. Also visible above are many different types of modules, a robotic arm, another impressive set of solar panels, and a supply ship. Construction began on the ISS in 1998.
说明：国际空间站(ISS)的不断扩建再一次改变了它的外观。上月，亚特兰蒂斯号航天飞机造访了国际空间站，并为其增加了组建，其中包括哥伦布科学实验室。在上面影像中可以看到整个宽大的太阳能电池板阵列，影像是亚特兰蒂斯号离开国际空间站返回地球时机组人员拍摄。通过将上面影像与过去拍摄到的国际空间站影像比较，这个太空前哨站在过去数年内被不断地扩建。在上面影像中还可以看到许多不同类型的模块，一条机械臂，另一组太阳能电池板，以及一条补给船。国际空间站开始建设的时间是1998年。

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2008-5-22 17:11

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历经十年在建的房子，很昂贵，很物有所值，让全人类俯视整个家园……

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M104 Hubble Remix
M104的哈勃合成图景

Credit & Copyright: Vicent Peris (OAUV / PTeam), MAST, STScI, AURA, NASA
Explanation: The striking spiral galaxy M104 is famous for its nearly edge-on profile featuring a broad ring of obscuring dust. Seen in silhouette against a bright bulge of stars, the swath of cosmic dust lanes lends a hat-like appearance to the galaxy in optical images suggesting the more popular moniker, The Sombrero Galaxy. Here, Hubble Space Telescope archival image data has been reprocessed to create this alternative look at the well-known galaxy. The newly developed processing improves the visibility of details otherwise lost in overwhelming glare, in this case allowing features of the galaxy's dust lanes to be followed well into the bright central region. About 50,000 light-years across and 28 million light-years away, M104 is one of the largest galaxies at the southern edge of the Virgo Galaxy Cluster.

醒目的螺旋星系m104是以其近边建立档案，内容广泛的光环模糊了灰尘。看到人影在对光明的鼓颗星，小水线面双体宇宙尘埃线出帽子般的外形，以银河，在光学图像显示较受欢迎的绰号，墨西哥帽星系。在这里，哈勃太空望远镜的档案影像数据已reprocessed创造这个方案，看看著名的银河。新开发的加工，提高能见度的细节，否则失去了在压倒性的眩光，在这种情况下，银河的尘埃带应遵循的，以及到光明的中部地区。约5.0万光年年全径和2800万光年距离， m104是其中一个最大的星系在南缘的室女座星系团。

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2008-5-22 17:22

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除了震撼，还是震撼……

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[ 本帖最后由 mant 于 2008-5-22 17:28 编辑 ]

lidan1113

真的很漂亮～～，顶。。。