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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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2023-12-04
2023年12月04日:飞机凌越新月-(Plane Crossing Crescent Moon)
2023年12月04日:飞机凌越新月-(Plane Crossing Crescent Moon)--原图下载{mtitle title="飞机凌越新月"/}Image Credit & Copyright: Juned Patel说明: 上图的弦月不是弓,也没把飞机射出如箭。这只是一次意外重合的产物。飞机的凝结尾通常呈白色,但在冉冉升起朝日方向的大量空气,选择性的消去了阳光的蓝光,不但造就了蓝天,而且也把反射阳光的凝结尾染成亮红色。而在飞机远后方的新月,也稍微偏红。这幅在上个月初摄于英国 博尔顿市的主题影像,取像的时间点紧在日落之后,因此照耀飞机及凝结尾的阳光来自下方。令人遗憾的是,在拍照的数分钟之后,这场即兴的天空演出就落幕了。飞机远离视线而去,天空愈来愈明亮,让持续升起的月亮变得难以辨认,而凝结尾也逐渐消散。{lamp/}原文:{mtitle title="Plane Crossing Crescent Moon"/}Image Credit & Copyright: Juned PatelExplanation: No, the Moon is not a bow, and no, it did not shoot out a plane like an arrow.What is pictured is a chance superposition. The plane's contrail would normally appear white, but the large volume of air toward the rising Sun preferentially knocked away blue light, not only making the sky blue, but giving the reflected trail a bright red hue. Far in the distance, well behind the plane, the crescent Moon also appears slightly reddened.Captured early last month from Bolton, UK, the featured image was taken so soon after sunrise that the plane was sunlit from below, as was its contrail. Within minutes, unfortunately, the impromptu sky show ended. The plane moved out of sight. The Moon kept rising but became harder to see through a brightening sky. And the contrail gradually dispersed.
2023年12月04日
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2019-02-12
2019年02月12日:飞机偶遇蛾眉月-(Plane Crossing a Crescent Moon)
2019年02月12日:飞机偶遇蛾眉月-(Plane Crossing a Crescent Moon)--原图下载{mtitle title="飞机偶遇蛾眉月"/}Image Credit & Copyright: Olivier Staiger(Binounistan.com)说明: 这当然不是飞往月球的可行方式。影像所呈现的,只是飞机和月亮的意外叠合。飞机凝结尾的色泽通常泛白,不过在此例里,落日方向的大量空气,滤除了阳光中的蓝光,让凝结尾在红化阳光的照射下,带着亮红的色泽。除此之外,位在飞机后方远处的蛾眉月,色泽也稍微偏红。这幅一个月前摄于瑞士.瓦莱州的主题影像,拍摄的时间紧在日落之后,因此,飞机及凝结尾都还沐浴在阳光里。让人惋惜的是,只过了数分钟,这场即兴的天空秀就落幕了。飞机首先越过月盘远颷消失在天际,接着月沉西山,然后夜幕升起,凝结尾变暗消散。{lamp/}原文:{mtitle title="Plane Crossing a Crescent Moon"/}Image Credit & Copyright: Olivier Staiger(Binounistan.com)Explanation: No, this is not a good way to get to the Moon.What is pictured is a chance superposition of an airplane and the Moon.The contrail would normally appear white, but the large volume of air toward the setting Sun preferentially knocks away blue light, giving the reflected trail a bright red hue. Far in the distance, well behind the plane, is a crescent Moon, also slightly reddened. Captured a month ago above Valais, Switzerland, the featured image was taken so soon after sunset that planes in the sky were still in sunlight, as were their contrails.Within minutes, unfortunately, the impromptu sky show ended. The plane crossed the Moon and moved out of sight. The Moon set. The contrail became unilluminated and then dispersed.
2019年02月12日
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2017-04-04
2017年04月04日:飞机的凝结尾和日晕-(Plane Contrail and Sun Halo)
2017年04月04日:飞机的凝结尾和日晕-(Plane Contrail and Sun Halo)--原图下载{mtitle title="飞机的凝结尾和日晕"/}Image Credit & Copyright: Alexandros Maragos说明: 天空发生了什么事呢?只是数个常见的白天景观,以不寻常的形式在天空交错而已。首先,远在山岳剪影的后方,有通常很明亮的太阳;太阳的前方有薄云,云内可能有一层六角形冰晶,造成了环绕太阳的22度日晕。横切过影像的不寻常弯折线则是凝结尾,是由路过飞机所造成的一种云。大部分的凝结尾是在比薄云更远之处,因为它的影子投射在薄云上头,让这幅主题影像带着立体的质感。这张主题影像是在今年一月底,摄于希腊西部的帕特雷市。{lamp/}原文:{mtitle title="Plane Contrail and Sun Halo"/}Image Credit & Copyright: Alexandros MaragosExplanation: What's happened to the sky?Several common features of the daytime sky are interacting in uncommon ways. First, well behind the silhouetted hills, is the typically bright Sun. In front of the Sun are thin clouds, possibly the home to a layer of hexagonal ice crystals that together are creating the 22 degree halo of light surrounding the Sun.The unusual bent line that crosses the image is a contrail -- a type of cloud created by a passing airplane.Much of the contrail must actually be further away than the thin cloud because it casts a shadow onto the cloud, giving an unusual three-dimensional quality to the featured image.The featured image was taken in late January in the city of Patras in West Greece.
2017年04月04日
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2017-01-17
2017年01月17日:航向月亮-(Fly Me to the Moon)
2017年01月17日:航向月亮-(Fly Me to the Moon)--原图下载{mtitle title="航向月亮"/}Image Credit & Copyright: Tamas Ladanyi(TWAN)说明: 这不是造访月亮的可行方式。照片所拍到的,只是飞机和月亮的意外叠合。凝结尾通常色泽泛白,不过在夕阳余晖的蓝光大多被厚厚的大气给滤除之后,凝结尾的反照光就带着亮红的色泽。在那天,太阳几乎是在月亮的后方,故飞机右方远处的庞大月轮,是一抹只有细窄银白的新月。在这幅摄于二星期之前的主题影像里,白画已远,天空褪去了蓝装,黑夜未临,天空尚未罩上黑衫,只得暂时披着魅异的栗色轻纱。拍照之后,飞机越过月轮远去,凝结尾消散匿迹,金乌西沉,玉兔随之,黑夜笼罩了天空,只留下了在深红天空中无法显现的数千颗恒星。{lamp/}原文:{mtitle title="Fly Me to the Moon"/}Image Credit & Copyright: Tamas Ladanyi(TWAN)Explanation: No, this is not a good way to get to the Moon.What is pictured is a chance superposition of an airplane and the Moon.The contrail would normally appear white, but the large volume of air toward the setting Sun preferentially knocks away blue light, giving the reflected trail a bright red hue. Far in the distance, to the right of the plane, is the young Moon. This vast world shows only a sliver of itself because the Sun is nearly lined up behind it. Captured two weeks ago, the featured image was framed by an eerie maroon sky, too far from day to be blue, too far from night to be black. Within minutes the impromptu sky show ended. The plane crossed the Moon. The contrail dispersed. The Sun set. The Moon set. The sky faded to black, only to reveal thousands of stars that had been too faint to see through the rustic red din.
2017年01月17日
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2010-04-08
2010年04月08日:发现号太空梭的烟云-(Discovery's Cloud)
2010年04月08日:发现号太空梭的烟云-(Discovery's Cloud)--原图下载{mtitle title="发现号太空梭的烟云"/}Image Credit &Copyright: Stefan O'Dougherty and Peter Nguyen(Acknowledgement: Simone Nageon De Lestang)说明: 发现号太空梭现在停靠在国际太空站,在地表上方约有350公里高的地方。上星期一,它在美国东岸日光节约时间06:21 EDT由甘迺迪太空中心的39A基地发射,顺利在美丽的日出前天空昇空进入轨道。上面这张往东看的长时间曝光照片,是在发射后不久拍摄的,地点在美国.佛罗里达州发射地点西方约20公里Titusville的一座游艇码头。影像记录了地平线附近多彩的天空,也呈见了影像左上角发射火箭随风飘动的凝结尾。影像中央被长条状蒸气云夹着的明亮长光痕,弧状伸向东方的地平线,就是将进行轨道太空任务的发现号之轨迹。{lamp/}原文:{mtitle title="Discovery's Cloud"/}Image Credit &Copyright: Stefan O'Dougherty and Peter Nguyen(Acknowledgement: Simone Nageon De Lestang)Explanation: The space shuttle orbiter Discoveryis now docked with theInternational Space Station,some 350 kilometersaboveplanet Earth.Last Monday, itslaunch to orbit was a beautiful one as itrose into clear,predawn skies at 6:21am EDTfrom Kennedy Space Center's pad 39A.Looking east, this time exposure was taken shortly after lift off from a marina about 13 miles west of the launch sitein Titusville, Florida.It shows the dawn's emerging colors along the horizon, with wafting rocket contrails at the upper right.The bright streak surrounded by the remarkable, elongated, vapor cloud near the center of the image is the actual trackof Discovery, arcing toward the horizon and itsorbital rendezvous.
2010年04月08日
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2008-04-29
2008年04月29日:美国上空飞机的飞行轨迹A-(Airplane Flight Patterns over the USA)
2008年04月29日:美国上空飞机的飞行轨迹A-(Airplane Flight Patterns over the USA)--原图下载{mtitle title="美国上空飞机的飞行轨迹A"/}Credit & Copyright: Aaron Koblin,FAA说明: 世人们欲往何方?每天有数以百万计的人们搭乘飞机在地球上移动着。每天有数十万架飞机在美国的上空飞行。上图是由 Aaron Koblin 绘製的一富引人注目的图画,描绘这些飞机的飞行轨迹。按一下上面的影像,大多数的浏览器会跳出一段影片,这里也有更容易观赏的影片。这部短片是描述2005年三月时,少数几天的飞机航线。左下角的计数器是正在美国上空飞行的飞机数目,右下角则是时间。您所看到的尾巴并不是凝结尾,而是由电脑运算出来的轨迹。北美洲和美国的几个重要城市在影片中可以分辨得出来。仔细看这影片可以发现某些日子比其他时间更繁忙,这表示飞机会在对旅客较方便的时刻离开某些目的地。就距离而言,搭飞机至遥远的地方远比开车安全得多。然而,搭飞机至邻近的机场,仍然比开车危险一点。{lamp/}原文:{mtitle title="Airplane Flight Patterns over the USA"/}Credit & Copyright: Aaron Koblin,FAAExplanation: What are these Earthlings going? Millions of people move about planet Earth by airplane every day. Hundreds of thousands of airplane flights take place over the US every day. A dramatic graphical depiction of these flights was created by Aaron Koblin and is shown above. Clicking on the above image will bring up a movie in many web browsers, a movie that might better be visible here.The movie depicts flight patterns that occurred over a few days in 2005 March. The count on the lower left shows the number of USA-related flights at the time listed on the lower right. The trails shown are not contrails but rather generated artificially by a computer algorithm.Major cities in North America and the USA are discernable.Inspection of the movie shows that some times of the day are busier than others, indicating that flights leave some destinations at times that are convenient for travelers.In terms of distance, flying to a distant location is much safer than driving to that location. Flying in an airplane, however, remains slightly more dangerous than driving to a nearby airport.
2008年04月29日
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