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2021年09月08日:仙女大星系方向的深空影像-(The Deep Sky Toward Andromeda)
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2023-10-15
2023年10月15日:树荫里的日食-(An Eclipse Tree)
2023年10月15日:树荫里的日食-(An Eclipse Tree)--原图下载{mtitle title="树荫里的日食"/}Image Credit & Copyright: Shawn Wyre说明: 你家的树有此能力吗?如果你细看这幅摄于美国.德州.伯利森市的主题影像,就能见到在昨天的日食期间,许多出现在地面树荫里的食日之影子。 因为树叶之间的小间隙,功能就像针孔,分别把上方偏食日的弯月形身影投射到地面上。昨天在美洲各地的民众,当月亮移到太阳前方之时,有福见到日偏食。在此同时,对位于地球一道狭窄食带里的住民,当月亮完全被太阳呑噬、阳光从月亮的边缘透过来之时,更是有幸见到火之环的日环食的景观。所以前面导引问题的答案是:你家的树不但能投射此次日食的影子,每次当日食出现在头顶时也都如是。在明年的4月8日,另一例日全食将掠过北美洲。{lamp/}原文:{mtitle title="An Eclipse Tree"/}Image Credit & Copyright: Shawn WyreExplanation: Yes, but can your tree do this? If you look closely at the ground in the featured image, you will see many images of yesterday's solar eclipse -- created by a tree.Gaps between tree leaves act like pinhole lenses and each create a small image of the partially eclipsed Sun visible in the other direction. The image was taken in Burleson, Texas, USA.Yesterday, people across the Americas were treated to a partial eclipse of the Sun, when the Moon moves in front of part of the Sun.People in a narrow band of Earth were treated to an annular eclipse, also called a ring-of-fire eclipse, when the Moon becomes completely engulfed by the Sun and sunlight streams around all of the Moon's edges.In answer to the lede question, your tree not only can do this, but will do it every time that a visible solar eclipse passes overhead. Next April 8, a deeper, total solar eclipse will move across North America.
2023年10月15日
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2018-08-27
2018年08月27日:汽球上见到的日全食影子-(Total Solar Eclipse Shadow from a Balloon)
2018年08月27日:汽球上见到的日全食影子-(Total Solar Eclipse Shadow from a Balloon)--原图下载{mtitle title="汽球上见到的日全食影子"/}Image Credit: Kuaray Project, NASA Eclipse Ballooning Project, Brasilia Astronomy Club, Montana State U.说明: 2017年美国大日食期间,你人在何处?离上星期的一年前,北美洲有超过1亿人走出户外,去观赏日偏食 ,而在同一期间里,有超过1千万位在美国各地的人们,见到了太阳完全消失在月盘后头的日全食。据估据,有百分之八十八的美国成年人,要么直接要么透过转播见到此次日食。此次日食,是人类历史上有最多影像记录的事件之一,日食影像 的摄影平台涵盖一些颇不寻常的地点,甚至包括飘流在地球平流层里的汽球。这批总数约50颗的汽球,是美国航太总署日食探空汽球计画的一部分。上面的主题照片,是由从爱达荷州释放的无人汽球上拍摄的360环景影片的一个定格,参与汽球释放者包括巴西的学生及美国航太总署和蒙大拿州立大学的人员。在影像里,可见到月球的影子 掠过下方的大地。虽然全食阶段持续不到3分钟,但许多亲眼目睹者 ,可能会终生难忘。许多北美洲的居民在2024年,有机会再次见到日全食。{lamp/}原文:{mtitle title="Total Solar Eclipse Shadow from a Balloon"/}Image Credit: Kuaray Project, NASA Eclipse Ballooning Project, Brasilia Astronomy Club, Montana State U.Explanation: Where were you during the Great American Eclipse of 2017? A year ago last week, over 100 million of people in North America went outside to see a partial eclipse of the Sun, while over ten million drove across part of the USA to see the Sun completely disappear behind the Moon -- a total solar eclipse.An estimated 88 percent of American adults saw the eclipse either personally or electronically.One of the better photographed events in human history, images from the eclipse included some unusual vistas, such as from balloons floating in the Earth's stratosphere.About fifty such robotic balloons were launched as part of NASA's Eclipse Ballooning project.Featured is a frame taken from a 360-degree panoramic video captured by one such balloon set aloft in Idaho by students from Brazil in conjunction with NASA and Montana State University.Pictured, the dark shadow of the Moon was seen crossing the Earth below. Although the total eclipse lasted less than three minutes, many who saw it may remember it for a lifetime.Many North Americans will get a another chance to experience a total solar eclipse in 2024.
2018年08月27日
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2017-01-31
2017年01月31日:该到何处去看美国日食-(Where to See the American Eclipse)
2017年01月31日:该到何处去看美国日食-(Where to See the American Eclipse)--原图下载{mtitle title="该到何处去看美国日食"/}Image Credit: Jay Anderson; Data: MODIS Satellite, NASA's GSFC说明: 你计划去观赏8月21日的美国日食吗?在那天的日出后的数小时,在切过美国的一道狭窄路径上,可见到相对罕见的日全食。不在这个带状区内的人,则会看到日偏食。虽然有些美国人就住在全食带之内,但是,一定有更多人会规划开车前去这个带状区。不过观赏日月食,有时会受到云层的干扰。所以为了增加视野清朗的机会,你不妨参考这幅主题图片,然后找个历史记录上常是蓝天的地点,以免全食阶段受到乌云的遮蔽。因为大部分的美国人拥有照相功能的智慧手机,这次的美国日食,可能会成为世界历史上最广被拍摄的天文事件。{lamp/}原文:{mtitle title="Where to See the American Eclipse"/}Image Credit: Jay Anderson; Data: MODIS Satellite, NASA's GSFCExplanation: Are you planning to see the American Eclipse on August 21?A few hours after sunrise, a rare total eclipse of the Sun will be visible along a narrow path across the USA.Those only near the path will see a partial eclipse. Although some Americans live right in path of totality, surely many more will be able to get there after a well-planned drive. One problem with eclipses, though, is that clouds sometimes get in the way. To increase your clear-viewing odds, you might consult the featured map and find a convenient destination with a historically low chance (more blue) of thick clouds overhead during totality.Given the large fraction of Americans carrying camera-equipped smartphones, this American Eclipse may turn out to be the most photographed event in the history of the world.
2017年01月31日
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2012-05-22
2012年05月22日:美国德州上空的日偏食-(A Partial Solar Eclipse over Texas)
2012年05月22日:美国德州上空的日偏食-(A Partial Solar Eclipse over Texas)--原图下载{mtitle title="美国德州上空的日偏食"/}Image Credit & Copyright: Jimmy Westlake (Colorado Mountain College) & Linda Westlake说明: 这是个典型的美国德州的落日景观,只是太阳缺了一大角。不过,太阳缺角的原因并不神祕,它只是被月亮遮住了而已。星期一/日的日偏食,成了有史以来有最多影像记录的天文事件;一个又一个的网路影像集,收藏了 各种精采的日食影像。上面这张是其中较有意思的影像之一:位在树丛与风车后方的红红天空中,悬着带食的夕阳。影像摄于美国德州的Sundown镇以西约三十公里处,时值星期天傍晚,月亮离开日盘的中心终结了环食阶段之后。在下个月初,另一个可能会产生更多影像的天文事件即将到临,它是2117年以前可见的最后一次金星凌日。{lamp/}原文:{mtitle title="A Partial Solar Eclipse over Texas"/}Image Credit & Copyright: Jimmy Westlake (Colorado Mountain College) & Linda WestlakeExplanation: It was a typical Texas sunset except that most of the Sun was missing. The location of the missing piece of the Sun was not a mystery -- it was behind the Moon. Sunday night's partial eclipse of the Sun by the Moon turned into one of the best photographed astronomical events in history. Gallery after online gallery is posting just one amazing eclipse image after another.Pictured above is possibly one of the more interesting posted images -- a partially eclipsed Sun setting in a reddened sky behind brush and a windmill.The image was taken Sunday night from about 20 miles west of Sundown, Texas, USA, just after the ring of fire effect was broken by the Moon moving away from the center of the Sun.Coming early next month is an astronomical event that holds promise to be even more photographed -- the last partial eclipse of the Sun by Venus until the year 2117.
2012年05月22日
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2002-06-12
2002年06月12日:金门大桥上空的日偏食-(A Partial Eclipse Over the Golden Gate Bridge)
2002年06月12日:金门大桥上空的日偏食-(A Partial Eclipse Over the Golden Gate Bridge)--原图下载{mtitle title="金门大桥上空的日偏食"/}Credit & Copyright: Gerard Barkats说明: 在这星期一,部份的太阳消失在月亮后面,形成一次日偏食的景观。当月相是残月(农曆月底)时,在地球上任何地方,都只有在清晨时才能够看到月亮,因为在这段期间,月亮是落在太阳后面。但是随着月亮绕着地球运行,在天空上它会追上太阳,然后再超过太阳。这时候,月亮就以新月(农曆月初)的面貌短暂出现在日落后的西方天空中。在地球上,这种月亮超越过太阳的景观,每个月都会重覆出现。有时候月亮追过太阳时,如果挡住部份的太阳就会造成日偏食。上面这幅从美国.加洲旧金山市的金门大桥拍摄的时序影像,就记绿了6月10日月亮超越过太阳的过程。{lamp/}原文:{mtitle title="A Partial Eclipse Over the Golden Gate Bridge"/}Credit & Copyright: Gerard BarkatsExplanation: Part of the Sun disappeared behind the Moon earlier this week. Previously, the waning Moon was best visible from all places on Earth during the early morning hours because it led the Sun. As the Moon orbited the Earth, however, the Sun caught up to it and passed it on the sky.Now the waxing Moon trails the Sun and is therefore best visible just after sunset. Each month, as viewed from the Earth, the Sun appears tolap the Moon and the cycle repeats. Sometimes when the Moon passes the Sun, it goes directly in front of part of it, causing a partial eclipse. Pictured above, a time lapse sequence shows the Moon passing the Sun on June 10 behind the Golden Gate Bridge in San Francisco, California, USA.
2002年06月12日
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1999-08-30
1999年08月30日:日全食时的地球-(Looking Back on an Eclipsed Earth)
1999年08月30日:日全食时的地球-(Looking Back on an Eclipsed Earth)--原图下载{mtitle title="日全食时的地球"/}Credit: Mir 27 Crew; Copyright: CNES说明: 上图是在日全食发生时,地球表面的景象。月球的影子会使小区域的地球表面变暗,而月影以每小时2000公里的速度掠过地球表面。只有在暗圈中心附近的人,才能看到日全食。其他区域的人,只能看到部份太阳被月亮遮住的偏食。1999年八月11日日食发生的时候,这张从和平号太空站 (Mir space station)上所拍摄的的照片,将是这个太空站的最后一批照片。因为经过十多年的使用后,和平号最近即将除役停用。{lamp/}原文:{mtitle title="Looking Back on an Eclipsed Earth"/}Credit: Mir 27 Crew; Copyright: CNESExplanation: Here is what the Earth looks like during a solar eclipse. The shadow of the Moon can be seen darkening part of Earth. This shadow moves across the Earth at nearly 2000 kilometers per hour. Only observers near the center of the dark circle see a total solar eclipse - others see a partial eclipse where only part of the Sun appears blocked by the Moon. This spectacular picture of the 1999 August 11 solar eclipse was one of the last ever taken from the Mir space station, as Mir is being decommissioned after more than ten years of productive use.
1999年08月30日
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