gohomeman1 发表于 2009-3-17 01:19

APOD 2009.3.16——22图集 火卫二,全球光害,春分点,掠日彗星

本帖最后由 gohomeman1 于 2009-4-28 23:31 编辑

为了大家看图方便,我决定把本周5天的APOD全部集中在一起发。先发周一的。时间已经比较迟,成大的翻译已经出了,就省点翻译精力了。本楼作为索引。

2楼:MRO拍摄的火卫二

6楼:全球光害调查

10楼:夕阳从太阳神殿入口西下

14楼:掠日彗星

本周就这些了吧。

gohomeman1 发表于 2009-3-17 01:20

2009 March 16
Martian Moon Deimos from MRO
Credit: HiRISE, MRO, LPL (U. Arizona), NASA
http://apod.nasa.gov/apod/image/0903/deimos_hirise.jpg


Explanation: Mars has two tiny moons, Phobos and Deimos. Pictured above, in a recently release image by HiRISE camera onboard the Mars-orbiting Mars Reconnaissance Orbiter (MRO), is Deimos, the smaller moon of Mars. Deimos is one of the smallest known moons in the Solar System measuring only about 15 kilometers across. The diminutive Martian moon was discovered in 1877 by Asaph Hall, an American astronomer working at the US Naval Observatory in Washington D.C. The existence of two Martian moons was predicted around 1610 by Johannes Kepler, the astronomer who derived the laws of planetary motion. In this case, Kepler's prediction was not based on scientific principles, buthis writings and ideas were so influential that the two Martian moons are discussed in works of fiction such as Jonathan Swift's Gulliver's Travels, written in 1726, over 150 years before their actual discovery.

gohomeman1 发表于 2009-3-17 01:23

http://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/apod.html

成大物理分站的翻译文章

MBO拍摄的火星(标题我加的)

說明: 火星有兩個小衛星,它們分別是火衛一(Phobos)與火衛二(Deimos)。這一張照片是最近由火星探勘號(MRO)上的HiRISE 相機所拍攝的火衛二,它是火星的衛星中較小的那一個。事實上,火衛二是太陽系中最小的衛星,直徑大約15公里。這個小小的火星衛星是在1877年由在華盛頓特區的美國海軍天文台工作的美國天文學家 Asaph Hall所發現的。其實,早在1610年左右,行星運動定律的發現者刻卜勒就預測火星會存在有兩顆衛星。儘管,刻卜勒的預測並無科學原理為根據;但是,直到火星的衛星真正地被發現之前的150年,刻卜勒的想法卻深深地影響科幻小說中有關火星衛星的討論,例如在1726年Jonathan Swift所寫的Gulliver's Travels,便是一個典型的例子。

gohomeman1 发表于 2009-3-17 01:23

上大图

http://apod.nasa.gov/apod/image/0903/deimos_hirise_big.jpg

micyang 发表于 2009-3-17 21:18

gohomeman1 发表于 2009-3-18 13:02

2009 March 18
GLOBE at Night: Help Track Light Pollution
Credit & Copyright: Globe at Night Project,UCAR, International Year of Astronomy 2009

http://apod.nasa.gov/apod/image/0903/night2_globe.jpg
Explanation: How many stars can you see?Through next week, the GLOBE at Night project invites people from all over the world to go outside at night, look up, and see!Specifically, people are invited to go out an hour after sunset and look for the constellation Orion toward the west.Rather than count Orion's stars directly, however, the GLOBE at Night website has made things easier by providing several star charts to which you can compare your view of Orion.Possible matches extend from a bright sky where only a few Orion stars are visible, to a very dark sky where over 100 Orion stars are visible.Pictured above are results from last year's sky observation campaign.Since 2009 is the International Year of Astronomy, it is hoped that an even better map can be created this year.By participating in this easy and fun activity, you are helping humanity to better understand how light pollution is changing across the Earth.

gohomeman1 发表于 2009-3-18 13:03

本帖最后由 gohomeman1 于 2009-3-18 13:07 编辑

http://apod.nasa.gov/apod/image/0903/night2_globe_big.jpg

成大的翻译和APOD大图

全球光害调查

說明: 在這片星空中你看見多少顆星星呢?下個星期,GLOBE at Night計畫邀請全世界的人們,在日落後走出戶外,看看天空!特別地,待在戶外一個小時,往西方天空觀察獵戶座。並不是直接去計算所看到的星星數目,GLOBE at Night網站提供了幾個簡單的圖片,來對應你所看到的獵戶座星空。在獵戶座範圍哩,光害嚴重的地區,僅可見數顆星星,但是在光害小的地區,可見超過一百顆星星。上圖為去年的觀測結果。2009年為全球天文年(IYA),希望今年能夠有更好的觀測密度,有更多人響應此活動。藉由參加這個有意義且好玩的活動,能讓人們更加瞭解地球上各地區光害 汙染的程度。

井蛙 发表于 2009-3-18 14:45

7# gohomeman1
中国一片空白,没参加调查?
国内也应该搞个,结果估计不太乐观吧,城市亮化工程在全国搞的热火朝天。。。。。。。:@

gohomeman1 发表于 2009-3-19 00:41

挖自己缺点的调查,☭一般都不搞的

gohomeman1 发表于 2009-3-20 13:24

本帖最后由 gohomeman1 于 2009-4-28 12:45 编辑

2009 March 20
Sunset at the Portara
Credit & Copyright: Anthony Ayiomamitis(TWAN)

http://apod.nasa.gov/apod/image/0903/solar-scenic-portara-03-800x600pixels.jpg
Explanation:
Today, the Sun crosses the celestial equator heading north at 11:44UT.Known as an equinox, this astronomical event marks the first day of spring in the northern hemisphere and autumn in the south.It also marks the beginningof Norouz,the Persian (Iranian) new year.Equinox means equalnight.
今天,太阳在世界时11:44过天赤道向北(这话拗口,说这个时候太阳直射地球的赤道线就好理解多了——译注)。春分点这个天文事件表示从这天开始,在天文学意义上,地球的北半球进入春天、南半球进入秋天(注意与气象学意义的不同——译注)。今天也是波斯历法(伊朗人用)中新年的开始。(Norouz大概相当于我们新年的元旦吧)
With the Sun on the celestial equator,Earth dweller swill experience 12 hours of daylight and 12 hours of darkness.Of course, in the norththe days will grow longer, theSun marching higher in the sky as summerapproaches.To celebrate the equinox, consider this scenic view of the setting Sun from the island of Naxos in the Aegean Sea.Recordedlast June, the well-planned image capturesthe Portara (big door) in adramatic silhouette.Measuring about 6 by 3.5 meters, the Portara is thelarge entrance to theGreek island's ancient, unfinished Temple ofApollo.
春分点表明这一天昼夜相等。当太阳运行到天赤道所在位置时,这一天地球上的居民将经历差不多(相等的)12小时白天和12小时黑夜(多废话啊~~~~~)。当然咯,北半球白天会长起来,太阳越来越高,向夏天的太阳高点逐步移动。为庆祝春分,(今日APOD)图的场景取自爱琴海的纳克索斯岛,当夕阳穿过太阳神殿的大门口时的剪影照片,这是去年6月拍摄的。Portara是古希腊未完成的阿波罗神殿(在Naxos岛上)的巨大入口,大约高6米、宽3.5米。

PS:大家知道,太阳运行轨迹叫黄道,地球赤道在天球投影叫天赤道。春分日黄道与天赤道相交。——gohomeman1

gohomeman1 发表于 2009-3-20 13:26

本帖最后由 gohomeman1 于 2009-3-20 14:02 编辑

等待成大的翻译出来,大意是今天是春分点,太阳在今天国际标准时11:44过天赤道的顶点。这个地名不知道。现在也没空翻译。如果成大的14:00还没有出,我自己翻译吧。

好了,先翻译了,虽然不是特通顺,我想意思全部说清了。

gohomeman1 发表于 2009-3-20 14:10

本帖最后由 gohomeman1 于 2009-3-20 14:13 编辑

今天成大更新很慢啊,这篇文章到处是拗口的词和生僻词,查字典还不够,还要搜索google、wikipedia,累!
另外这个历法到底是伊朗人用还是伊斯兰人使用,还是值得商榷的。

sagalliant 发表于 2009-3-20 23:57

春分日,一年一度的“节日”,北半球的春暖花开就要到来了

gohomeman1 发表于 2009-3-22 16:40

本帖最后由 gohomeman1 于 2009-3-22 16:42 编辑

掠日彗星

2009 March 22
http://apod.nasa.gov/apod/image/0903/sungrazer_soho.jpg

Sungrazer   
Credit: LASCO,SOHO Consortium,NRL,ESA,NASA

Explanation: The Sun destroyed this comet.Arcing toward a fiery fate, this Sungrazer cometwas recorded by the SOHO spacecraft's Large Angle Spectrometric COronagraph(LASCO) on 1996 Dec. 23.LASCO uses an occulting disk, partially visible at the lower right,to block out the otherwise overwhelmingsolar disk allowing it toimage the inner 5 million miles of the relatively faintcorona.The comet is seen as itscoma enters the bright equatorialsolar wind region(oriented vertically).Spots and blemishes on the imageare background stars and camera streaks caused by charged particles.Positioned in space tocontinuously observe the Sun, SOHO has now been use to discover over 1,500 comets, including numerous sungrazers.Based on their orbits, they arebelieved to belong to a family of comets created by successivebreak ups from a single large parent cometwhich passed very near the sun in the twelfth century.The Great Comet of 1965, Ikeya-Seki, was also a member of the Sungrazer family, coming within about 650,000 kilometers of the Sun's surface.Passing so close to the Sun, Sungrazers are subjected to destructive tidal forces along with intense solar heat.This comet, known as SOHO 6, did not survive.

gohomeman1 发表于 2009-3-22 16:44

继续偷懒,把成大的搬过来吧。

掠日彗星
影像提供: LASCO, SOHO Consortium, NRL, ESA, NASA

說明: 太陽摧毀了這顆彗星。1996年12月23日,SOHO衛星的廣角日冕儀 (LASCO)拍攝到這顆掠日彗星,當時,它正循著弧形軌道衝向太陽。廣角日冕儀用影像右下角可見的圓形掩日盤來遮住眩目之日盤,以拍攝離太陽八百萬公里女內的黯淡日冕。在拍攝這張照片時,彗星的彗髮正好要穿過太陽明亮的赤道太陽風區 (在此張影像中垂直上指)。照片中的亮點和條狀雜訊,分別是背景恆星和射進相機的帶電粒子所造成的。由於SOHO衛星所在的位置能24小時不停地觀測太陽,到目前為止,它已經發現了1,500顆彗星,其中有許多是掠日彗星。根據它們的軌道,它們應該是一個掠日彗星家族的成員,是單一顆大型彗星的碎片。這顆大型彗星,可能是在十二世紀回歸時,太接近太陽時,被太陽強大的潮汐扯碎成許多碎片,形成了這個掠日彗星家族。1965年的池谷-關大彗星 (Comet Ikeya-Seki),也是這個掠日彗星家族的成員之一,當時,它以65萬公里的高度掠過太陽。由於掠日彗星非常靠近太陽,它們會受到太陽強大潮汐力和熱能的摧殘。上面這顆被命名為SOHO 6的彗星,在這次掠過太陽時煙飛雲滅,並沒有存活下來。

http://apod.nasa.gov/apod/image/0903/sungrazer_soho_big.gif

gohomeman1 发表于 2009-3-22 16:49

死亡之舞啊。如果这个最后的链接比较慢,可以下载我的上传文件。

摩羯Capricom 发表于 2009-3-22 16:54

楼主辛苦了,赞一个~

最爱NBA 发表于 2009-3-22 18:24

::070821_04.jpg::漂亮啊

AJJ 发表于 2009-3-22 18:29

这都是哪年的事啦~~~~~太老赖

tsiolkovsky 发表于 2009-3-22 18:53

真不容易,世界太奇妙了
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