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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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欢迎来到人生天地间
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2017年11月29日:M42:猎户座大星云-(M42: The Great Orion Nebula)
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2017年08月06日:银河与炸裂的流星-(Milky Way and Exploding Meteor)
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2024年02月11日:直指月亮的火箭烟尘影子-(Rocket Plume Shadow Points to the Moon)
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2006-10-01
2006年10月01日:夜晚的地球-(Earth at Night)
2006年10月01日:夜晚的地球-(Earth at Night)--原图下载{mtitle title="夜晚的地球"/}Credit: C. Mayhew &R. Simmon(NASA/GSFC), NOAA/NGDC, DMSP Digital Archive说明: 这是地球夜间的景象,你能找到你最锺爱的国家或城市吗? 在人为灯光的导引下,你应不难找到地球表面高度开发或人口密集的区域,例如欧洲的海岸、美国东岸和日本。 许多都市多紧邻着河流或海洋,目的是要靠着低廉的船运来交换货物。 特别黝黑的区域通常是南美洲、非洲、亚洲和澳洲的中部。 上面这张影像,是由数百张美国国防气象卫星 (DMSP satellites)所拍摄的影像组合而成的。{lamp/}原文:{mtitle title="Earth at Night"/}Credit: C. Mayhew &R. Simmon(NASA/GSFC), NOAA/NGDC, DMSP Digital ArchiveExplanation: This is what the Earth looks like at night. Can you find your favorite country or city? Surprisingly, city lights make this task quite possible. Human-made lights highlight particularly developed or populated areas of the Earth's surface, including the seaboards of Europe, the eastern United States, and Japan. Many large cities are located near rivers or oceans so that they can exchange goods cheaply by boat. Particularly dark areas include the central parts of South America, Africa, Asia, and Australia. The above image is actually a composite of hundreds of pictures made by the orbiting DMSP satellites.(Editor's note: This image has generated many print requests. Unfortunately, we do not sell prints. However, a high-resolution digital version of the image is available here.
2006年10月01日
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2006-09-11
2006年09月11日:英格兰上空的月偏食-(Eclipsed Moon Rising Over England)
2006年09月11日:英格兰上空的月偏食-(Eclipsed Moon Rising Over England)--原图下载{mtitle title="英格兰上空的月偏食"/}Credit & Copyright: Gain Lee说明: 上星期四,月亮的部份表面变暗,成因并不是来自月相;当时是满月,而是因为部份月亮进入地球的暗影中。所造成的月偏食,东大西洋区、欧洲、非洲、亚洲及西太平洋区皆得见。在月食最暗的区域,来自太阳的阳光完成被遮掩,全部的过程持续了九十分钟。在上面这幅影像中,一轮偏食月低悬在英格兰.Huddersfield一座庄园上方。拍摄的地点远在前景的庄园前方,以便让张角为半度的月亮看起来像是位在背景的远处。当时落日余辉还微微照亮着前景。下次月食将发生在2007年3月。{lamp/}原文:{mtitle title="Eclipsed Moon Rising Over England"/}Credit & Copyright: Gain LeeExplanation: Last Thursday, part of our Moon turned dark. The cause, this time, was not a partial lunar phase -- the Moon was full -- but rather that part of the Moon went into Earth's shadow. The resulting partial lunar eclipse was visible from the eastern Atlantic Ocean through Europe, Africa, and Asia and into the western Pacific Ocean. The darkest part of the lunar eclipse, when part of the Moon was completely shielded from sunlight, lasted about 90 minutes.Pictured above, a partially eclipsed Moon is seen rising over an estate in Huddersfield, England. The above image was taken far away from the house in the foreground, as only this would allow it to appear as angularly small as the half-degree Moon far in the background. A setting twilight Sun lit the foreground.The next eclipse of the Moon will occur in March 2007.
2006年09月11日
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2003-03-05
2003年03月05日:地球的人口分布-(Where People Live on Planet Earth)
2003年03月05日:地球的人口分布-(Where People Live on Planet Earth)--原图下载{mtitle title="地球的人口分布"/}Credit: NRCS, USDA说明: 人类住在地球上的那些地区呢?虽然每一个大陆都有人类,其中人口密度最高的是亚洲。不过,每一个洲也几乎多有人烟稀少的区域,例如非洲的撒哈拉沙漠、北美洲的白色北大荒、澳洲的内陆、南美洲的亚马逊盆地、和亚洲的喜玛拉雅山区。上面这张色码地图是根据1994年的人口估计製做出来的,当时世界人口大约有55亿。据现在的估计,世界上的人口大约已经增加到63亿。{lamp/}原文:{mtitle title="Where People Live on Planet Earth"/}Credit: NRCS, USDAExplanation: Where do people live on Planet Earth? Although people inhabit every continent, the highest population densities occur in Asia. Sparsely inhabited regions occur on virtually every continent, however, including the Sahara Desert in Africa, the Great White North of North America, the outback of Australia, the Amazon of South America, and the Himalayan Mountains of Asia. The above color-coded map was produced from populations estimates made for 1994, when the world population was about 5.5 billion. Current estimates place the world population at about 6.3 billion.
2003年03月05日
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2002-06-10
2002年06月10日:日环食: 浴火之环-(Annular Eclipse: The Ring of Fire)
2002年06月10日:日环食: 浴火之环-(Annular Eclipse: The Ring of Fire)--原图下载{mtitle title="日环食: 浴火之环"/}Credit & Copyright: Dennis Mammana (Skyscapes)说明 : 明天(美国时间的6月10日),将会有少数的幸运儿看到一只 "浴火之环"。 那是指当出现 日环食 时,太阳 被 月亮 遮住的景象。当达此种日食的食甚时,太阳的中间部分好像消失了,灰暗的月亮则像是整个被耀眼的太阳包围。不过这次只有 位于太平洋上一狭长地带 的民众才有此眼福,大部分区域-包括 亚洲 东部和 北美洲 西部,多只能目睹月亮将太阳吃掉一小块。在东亚,初升起的太阳将在 6 月11日清晨发生偏食;同时,在大部分的北美洲,会看到6月10日的夕阳发生同样的日偏食现象。请千万记得绝对不要直视太阳,即使它当时正被月亮遮掩住。当月球行进到绕 地 运行的 椭圆轨道的较远端,这时将发生 日环食,而非日全食。 下一次的日环食 将发生在 2003 年五月,而日全食则会在今年十二月初与民众见面。 上图的照片摄于 1992 年一月,摄影师透过棕榈树,拍下这样一幅壮观的 日环食 照片。{lamp/}原文:{mtitle title="Annular Eclipse: The Ring of Fire"/}Credit & Copyright: Dennis Mammana (Skyscapes)Explanation: Today, a few lucky people will see a "ring of fire." That's a name for the central view of an annular eclipse of the Sun by the Moon. At the peak of this eclipse, the middle of the Sun will appear to be missing and the dark Moon will appear to be surrounded by the bright Sun. This will only be visible, however, from a path that crosses the Pacific Ocean. From most locations at most times, including most of eastern Asia and western North America, the Moon will only appear to take a bite out the Sun. In east Asia, the rising Sun will appear partially eclipsed on the morning of June 11. Simultaneously, in much of North America, the same eclipsed sun will appear to be setting on June 10. Remember to never look directly at the Sun even during an eclipse. An annular eclipse occurs instead of a total eclipse when the Moon is on the far part of its elliptical orbit around the Earth. The next annular eclipse of the Sun will take place in 2003 May, although a total eclipse will occur later this year in early December. Pictured above, a spectacular annular eclipse was photographed behind palm trees on 1992 January.
2002年06月10日
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2001-12-12
2001年12月12日:韩国天文台上空的狮子座流星雨-(Leonids Over Korean Observatory)
2001年12月12日:韩国天文台上空的狮子座流星雨-(Leonids Over Korean Observatory)--原图下载{mtitle title="韩国天文台上空的狮子座流星雨"/}Credit & Copyright: O Chul Kwon(SoBaekSan National Observatory)说明: 今年的狮子座流星雨实际上有两个极大期,第一个出现在北美洲的11月18日清晨,而第二个的流星出现率几乎是第一个的二倍,发生在8小时后,而最佳的观测地点是在亚洲。上面这张影像,是韩国的小白山国家天文台 (SoBaekSan National Observatory)沐浴在第二群狮子流星雨下的景观,这个极大期的开端在当地时间淩晨3:50。纵使长达40分钟的曝光,让影像的背景光变得很亮,不过在影像中,还是可以清楚看到无数的狮子座流星。当地的观星者报告说,在这段爆发期间,他们平均每秒看到超过一颗流星。明年的狮子座流星数量也许更多,不过到时需要和一轮明月争辉,观测条件并不好。{lamp/}原文:{mtitle title="Leonids Over Korean Observatory"/}Credit & Copyright: O Chul Kwon(SoBaekSan National Observatory)Explanation: There were two peaks to this year's Leonid Meteor Shower. The first peak was best seen during the early morning hours of November 18 in North America, while the second peak, almost twice the intensity of the first, occurred eight hours later and was best seen from Asia. Pictured above is an image of SoBaekSan National Observatory in Korea during the second Leonid peak, starting at 3:50 am local time. Visible in the background are numerous Leonid meteors bright enough to be seen over background light even during the 40-minute exposure. Local observers reported an average of over one meteor per second during this outburst.Next year's Leonid Meteor Shower might be even more intense but will have to compete will the glare of a nearly full moon.
2001年12月12日
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1999-08-10
1999年08月10日:-(A Total Eclipse for Europe)
1999年08月10日:-(A Total Eclipse for Europe)--原图下载{mtitle title=""/}Credit: Fred Espenak (GSFC), NASA{lamp/}原文:{mtitle title="A Total Eclipse for Europe"/}Credit: Fred Espenak (GSFC), NASAExplanation: The last total solar eclipse of this millennium will be visible for a few minutes tomorrow from a narrow path in Europe and Asia. There, millions of sightseers will witness the Moon move directly between the Earth and Sun, covering up the Sun completely. Observers not besieged by clouds may get to see the Sun's large and flowing corona first hand. A partial eclipse of the Sun, where part of the Sun is still visible, can be witnessed throughout the rest of Europe and much of Northern Africa and Asia. Precise locations of total and partial eclipse are shown on the above map. In modern times, eclipses are precisely predicted and well understood. In fact, anyone can see this total solar eclipse live on the web. In ancient times, though, eclipses frequently startled large populations, who interpreted them in ways that changed the course of wars and empires.
1999年08月10日
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