w****l
发帖数: 344 | 1 http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/image/0301/sextet_hst_c1
.jpg
漩渦星系的六重唱
影像提供: J. English (U. Manitoba), C. Palma (PSU), et al., NASA
說明: 在巨蛇座 的頭部，有一群令人好奇的星系團，那就是有名的西佛六重唱。但
是，正確地說，六重唱實際上只有四個交互作用的星系。在這張哈伯太空望遠鏡的影
像 中心的位置，碰巧有一個面對我們的漩渦星系，實際上它在更遠的距離外，所以
看起來似乎是跟這群星系團是在一起的。 這個星系團 是距離我們一億九千萬光年，
這些交互作用的星系群緊密地在一個寬約十萬光年的空間大小，相當於我們的本銀河
星系的大小，成為一個眾所皆知的緊密星系團。在重力的作用下，幾十億萬年之後，
這些緊密的星系團會合併成一個大的星系。 |
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w****l
发帖数: 344 | 2 星团RCW 38内的神秘X射线辐射
Credit: S. Wolk (CfA), et al., CXC, NASA
说明: 位于船帆座 (Vela)内的星团RCW 38，距离我们仅6000光年，拥有许多辐射非
常强烈的恒星。这些年龄只有100万年的年轻恒星，具有炽热高温的外层大气，因而
在这张由钱德拉X射线观测站拍摄的影像里，看起像是一个个点状的X射线源。它们周
围弥漫着的X射线云气则有些神秘难解了。这张照片以色泽来区分X射线的能量，蓝色
代表高能的X射线，绿色代表中能量X-射线，红色则代表低能量的X射线辐射。这团X
射线云气大小只有数光年，它充填在星团的各处，这个特征暗示这些X-射线是由在磁
场中运动的高能电子产生的。通常这类高能电子的来源是爆炸恒星的震波(超新星遗
骸)，或者是高速自转的中子星，但钱德拉观测站的数据表明星团中好象并没有这类
特殊天体，所以给科学家流下了一个很大的谜团。
原文来自： http://antwrp.gsfc.nasa.gov/apod/ap021227.html (linq编译) |
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w****l
发帖数: 344 | 3 年轻星系POX 186
Credit: Michael Corbin (CSC/STScI), William Vacca (MPE), NASA
说明: 不是很久以前，也不是那么遥远的地方，一个星系诞生了！这个由恒星、云气
和尘埃所组成的“宇宙岛”名为POX 186，位于室女座一处不太拥挤的天区里，距离
我们只有6800万光年而已。和我们的银河系相比，POX 186是个很小很小的星系。例
如，我们银河系横跨了十万光年的范围，含有2000亿颗恒星，而这个娇小星系的大小
只有900光年，含有大约1000万颗恒星。以宇宙的尺度来说，POX 186也很年轻。这张
哈勃太空望远镜拍摄的照片表明，这个扭曲星系的年龄可能只有一亿年，而且是两个
更小星系互撞的结果。分析表明象POX 186这种孤立的小型星系，可能是宇宙最后形
成的一批星系。
原文来自： http://antwrp.gsfc.nasa.gov/apod/ap030103.html (linq编译) |
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w****l
发帖数: 344 | 4 日冕
Credit: Wendy Carlos & Jonathan Kern
说明: 日全食期间，太阳的最外层大气 - 日冕，向人展现出令人敬畏的的景象。 但
日冕最引人注意的微妙摇曳结构，却很难用照片来捕捉，因为日冕最亮和最暗的部份
，亮度比超过一万。尽管如此，上面这张曝光5秒的照片，已经相当接近于展现日冕
最精彩全貌的程度。这张在12月4日日全食时从南非所拍摄的彩色照片，动用了一部
特制的日冕相机和一部望远镜。这部相机有一片精确设计的滤镜，它的减光能力随着
离滤镜中心的距离急速衰减，以补偿太阳盘面边缘明亮日冕和较外围昏暗日冕在亮度
上的重大差异。
原文来自： http://antwrp.gsfc.nasa.gov/apod/ap021213.html (linq编译) |
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w****l
发帖数: 344 | 5 阿波罗17号：最后一次登月任务
Credit: Apollo 17, NASA (Image scanned by Kipp Teague)
说明: 1972年的12月，做为美国阿波罗最后一次登月计划的执行者，阿波罗17号的航
天员塞南(Eugene Cernan)和史密特 (Harrison Schmitt)在月球的Taurus-Littrow峡
谷停留了大约75小时，当时，他们的伙伴Ronald Evans停留在绕月轨道上的指挥舱内
。在他们第三次也就是最后一次月面漫步开始的时候，史密特拍摄了这张塞南站在美
国国旗和登月车伞状高增益天线之间的照片，照片背景的山头称为南中央山块(South
Massif)，而从塞南头盔面罩的倒影可以勉强看到史密特的身影。 阿波罗17号的组
员带回来110公斤的月岩和月球土壤样品，数量上比任何其它的月面降落地点都要多
。
原文来自： http://antwrp.gsfc.nasa.gov/apod/ap021212.html (linq编译) |
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g****e
发帖数: 612 | 7 发信人: asteroid (小行星), 信区: Astronomy
标 题: Re: 看看这位搞出什么创意的了？
发信站: BBS 水木清华站 (Wed Jun 11 08:30:59 2003), 转信
看看这个照片。。。月亮、太阳和热气球
转自：http://antwrp.gsfc.nasa.gov/apod/ap030606.html
Sun, Moon, Hot Air Balloon
Credit & Copyright: Thilo Kranz
Explanation: Anticipating the celestial shadow play of a solar eclipse,
sky gazers across Germany watched the Sun rise on May 31. In Bonn,
astrophotographer Thilo Kranz had set up his small refractor telescope
and camera on the Kennedy Bridge across the Rhein river t |
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g****e
发帖数: 612 | 8 发信人: kuux (KUUX), 信区: Astronomy
标 题: [每日一图] 笔状星云的震波
发信站: BBS 水木清华站 (Tue Jul 15 19:54:03 2003)
Credit: Hubble Heritage Team (STScI/AURA), W. Blair (JHU) & D. Malin (David M
alin Images), NASA
说明: 一颗超新星爆炸的震波，以每小时50万公里的速度扫过整个星际空间,这便是造成著
名的笔状星云(NGC2736)的主因。这个星云是11,000年前一颗恒星爆炸之后所留下扩张壳状
的船帆座超新星爆炸遗骸的一部份。起初，震波是以每小时数百万公里的速度前进，然而
它在向外扩张过程中在周围气体的阻碍下，速度渐渐变慢。从上图这一照片中，我们可以
从左侧云气较少的情形推断出震波是由左向右移动的。这一张哈勃太空望远镜于2002年10
月间所拍摄的影像，跨度约1光年，它只是横跨约100光年的整个船帆座超新星爆炸遗骸的
一小部份。
原文来自： http://antwrp.gsfc.nasa.gov/apod/ap0306 |
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s*****t
发帖数: 1994 | 9 http://antwrp.gsfc.nasa.gov/apod/image/0703/transit_label_med4.mov
Lunar Transit from STEREO
Credit: STEREO Project, NASA
Explanation: A million miles from planet Earth, last weekend the STEREO B
spacecraft found itself in the shadow of the Moon. So, looking toward the
Sun, extreme ultraviolet cameras onboard STEREO B were able to record a
stunning movie of a lunar transit (aka solar eclipse), as the Moon tracked
across the solar disk. Each frame of the movie is a false-color composite of
images |
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s*****t
发帖数: 1994 | 10 http://antwrp.gsfc.nasa.gov/apod/image/0705/earth_galileo_big.mov
Rotating Earth from Galileo
Credit: NASA, JPL, Doug Ellison
Explanation: When passing Earth on your way to Jupiter, what should you look
for? That question arose for the robotic Galileo spacecraft that
soundlessly coasted past the Solar System's most photographed orb almost two
decades ago. The Galileo spacecraft, although originally launched from
Earth, coasted past its home world twice in an effort to gain speed and
shorten the |
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s*****t
发帖数: 1994 | 11 Go to http://antwrp.gsfc.nasa.gov/apod/ap070522.html to see movie.
Orange Sun Oozing
Explanation: The Sun's surface keeps changing. Click the central arrow and
watch how the Sun's surface oozes during a single hour. The Sun's
photosphere has thousands of bumps called granules and usually a few dark
depressions called sunspots. The above time-lapse movie centered on Sunspot
875 was taken last year by the Vacuum Tower Telescope in the Canary Islands
of Spain using adaptive optics to resolve detail |
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s*********t
发帖数: 99 | 12 my first impression on this pic: 好大一串金珠链啊 :P |
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s*****t
发帖数: 1994 | 13 CoRoT Satellite Discovers Rocky Planet
Illustration Credit: ESO/L. Calcada
Explanation: How similar is exoplanet CoRoT-7b to Earth? The newly
discovered extra-solar planet is the closest physical match yet, with a mass
about five Earths and a radius of about 1.7 Earths. Also, the home star to
CoRoT-7b, although 500 light years distant, is very similar to our Sun.
Unfortunately, the similarities likely end there, as CoRoT-7b orbits its
home star well inside the orbit of Mercury, making its year l |
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s*****t
发帖数: 1994 | 14 Explanation: Often inspiring, or offering a moment for contemplation, a
sunset is probably the most commonly photographed celestial event. But this
uncommonly beautiful sunset picture was taken on a special day, the Equinox
on September 22. Marking the astronomical change of seasons, on that day
Earth dwellers experienced nearly 12 hours of daylight and 12 hours of
darkness (an equal night). Reflected in the calm waters of Lake Balaton with
a motionless sailboat in silhouette, the Sun is setting |
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s*****t
发帖数: 1994 | 16 Credit: Cassini Imaging Team, ISS, JPL, ESA, NASA
Explanation: How would Saturn look if its ring plane pointed right at the
Sun? Before last month, nobody knew. Every 15 years, as seen from Earth,
Saturn's rings point toward the Earth and appear to disappear. The
disappearing rings are no longer a mystery -- Saturn's rings are known to be
so thin and the Earth is so near the Sun that when the rings point toward
the Sun, they also point nearly edge-on at the Earth. Fortunately, in this
third mill |
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s*****t
发帖数: 1994 | 17 Explanation: After undocking, the space shuttle Discovery crew got a
memorable view of the developing International Space Station (ISS). Pictured
orbiting high above Earth last month, numerous solar panels, trusses, and
science modules of the ISS were visible. The Discovery crew brought mission
specialist Nicole Stott to the ISS, and returned astronaut Timothy Kopra to
Earth. Among the many mission and expedition accomplishments of the
Discovery crew included delivering and placing the Fluids In |
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s*****t
发帖数: 1994 | 18 谁来考证一下下面的两块陆地是哪儿？
Pictured
mission
to
the |
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s*****t
发帖数: 1994 | 21 A Double Ringed Basin on Mercury
Credit: NASA/JHU APL/CIW
Explanation: What created the internal second ring of this double ringed
basin on Mercury? No one is sure. The unusual feature spans 160 kilometers
and was imaged during the robotic MESSENGER spacecraft's swing past our
Solar System's innermost planet last week. Double and multiple ringed basins
, although rare, have also been imaged in years past on Mars, Venus, Earth,
and Earth's Moon. Mercury itself has several doubles, including huge |
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F***r
发帖数: 1685 | 22 大的先撞进去，然后小的紧跟在后面？
basins
,
Caloris
circular |
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s*****t
发帖数: 1994 | 23 Stars Over Easter Island
Credit & Copyright: Stéphane Guisard (Los Cielos de Chile), TWAN
Explanation: Why were the statues on Easter Island built? No one is sure.
What is sure is that over 800 large stone statues exist there. The Easter
Island statues, stand, on the average, over twice as tall as a person and
have over 200 times as much mass. Few specifics are known about the history
or meaning of the unusual statues, but many believe that they were created
about 500 years ago in the images of |
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F***r
发帖数: 1685 | 25 天空真美啊，去那里做个石头人也不错
history |
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s*****t
发帖数: 1994 | 30 LCROSS Centaur Impact Flash
Credit: NASA, LCROSS Mission Team
Explanation: This mid-infrared image was taken in the last minutes of the
LCROSS flight mission to the Moon. The small white spot (enlarged in the
insets) seen within the dark shadow of lunar crater walls is the initial
flash created by the impact of a spent Centaur upper stage rocket. Traveling
at 1.5 miles per second, the Centaur rocket hit the lunar surface yesterday
at 4:31am UT, followed a few minutes later by the shepherding LCR |
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s*****t
发帖数: 1994 | 31 Moon and Planets in the Morning
Credit & Copyright: Stefan Seip (TWAN)
Explanation: Last Friday, a gathering of three bright planets and the Moon
graced the morning sky. With Mercury, Venus, Saturn, and a narrow lunar
crescent close to the eastern horizon in the dawn twilight, this picture of
the beautiful conjunction was recorded near Noerdlingen, Germany. These
planets are wandering apart now and Mercury is sinking closer toward the
rising Sun. But if you also scan the rest of the sky this wee |
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F***r
发帖数: 1685 | 37 Explanation: Inspired by the night skies of planet Earth in the
International Year of Astronomy, photographer Larry Landolfi created this
tantalizing fantasy view. The composited image suggests a luminous Milky Way
is the heavenly extension of a country road. Of course, the name for our
galaxy, the Milky Way (in Latin, Via Lactea), does refer to its appearance
as a milky band or path in the sky. In fact, the word galaxy itself derives
from the Greek for milk. Visible on moonless nights from dark |
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s*****t
发帖数: 1994 | 41 The Average Color of the Universe
Credit: Karl Glazebrook & Ivan Baldry (JHU)
Explanation: What color is the universe? More precisely, if the entire sky
were smeared out, what color would the final mix be? This whimsical question
came up when trying to determine what stars are commonplace in nearby
galaxies. The answer, depicted above, is a conditionally perceived shade of
beige. To determine this, astronomers computationally averaged the light
emitted by one of the largest sample of galaxies ye |
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s*******n
发帖数: 1474 | 42 统一就是美啊
question
of
emission |
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s*****t
发帖数: 1994 | 45 Credit & Copyright: Bjørnar G. Hansen,
Explanation: Northern Lights, or aurora borealis, haunted skies over the
island of Kvaløya, near Tromsø Norway on December 13. This 30
second long exposure records their shimmering glow gently lighting the
wintery coastal scene. A study in contrasts, it also captures the sudden
flash of a fireball meteor from December's excellent Geminid meteor shower.
Streaking past familiar stars in the handle of the Big Dipper, the trail
points back toward |
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s*****t
发帖数: 1994 | 46 Credit & Copyright: Wally Pacholka (AstroPics.com, TWAN)
Explanation: Monstrously bright, this fireball meteor lit up the Mojave
Desert sky Monday morning, part of this year's impressive Geminid meteor
shower. Seen toward the southwest over rock formations near Victorville,
California, a more familiar celestial background was momentarily washed out
by the meteor's flash. The background includes bright star Sirius at the
left, and Aldebaran and the Pleaides star cluster at the right side of the
i |
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s*****t
发帖数: 1994 | 47 太吓人的就不要贴出来了，免得人家认为是地震云，吓得夜里
睡不着觉。
如果是很好的，可以考虑给APOD投稿啊。 |
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s*****t
发帖数: 1994 | 48 Credit & Copyright: Miloslav Druckmüller (Brno University of Technology),
Martin Dietzel, Peter Aniol, Vojtech Rusin
Explanation: Only in the fleeting darkness of a total solar eclipse is the
light of the solar corona easily visible. Normally overwhelmed by the bright
solar disk, the expansive corona, the sun's outer atmosphere, is an
alluring sight. But the subtle details and extreme ranges in the corona's
brightness, although discernible to the eye, are notoriously difficult to
photograph. Pic |
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s*****t
发帖数: 1994 | 49 Credit: G. Neukum (FU Berlin) et al., Mars Express, DLR, ESA
Explanation: Why is this small object orbiting Mars? The origin of Phobos,
the larger of the two moons orbiting Mars, remains unknown. Phobos and
Deimos appear very similar to C-type asteroids, yet gravitationally
capturing such asteroids, circularizing their orbits, and dragging them into
Mars' equatorial plane seems unlikely. Pictured above is Phobos as it
appeared during last week's flyby of ESA's Mars Express, a robotic
spacecraft |
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