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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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2024-01-16
2024年01月16日:肉眼几乎可见的猎户座-(The Orion You Can Almost See)
[2024年01月16日:肉眼几乎可见的猎户座-(The Orion You Can Almost See)--原图下载](https://apod.nasa.gov/apod/image/2401/OrionMcc_Guzzini_1366.jpg"onMouseOver="if (document.images)document.imagename1.src='image/2401/OrionMcc_Guzzini_960_annotated.jpg';"onMouseOut="if (document.images)document.imagename1.src='image/2401/OrionMcc_Guzzini_960.jpg';){mtitle title="肉眼几乎可见的猎户座"/}Image Credit & Copyright: Michele Guzzini说明: 你认得这个星座吗?儘管它是天空中最容易辨认的星群之一,但这种与肉眼所见比较更加完整的猎户座,只有透过长曝光数位相机成像及电脑后製处理才得以显现。在此影像里,带着深橙色调的低温红巨星参宿四,是位于左上角的最明亮恒星。猎户座的炽热泛蓝恒星数量众多,其中,右下角的超巨星参宿七,亮度足以和左上角的参宿四相抗衡,而右上角的亮星则是参宿五。距离我们全约为1,500光年远的猎户腰带三星,皆诞生于猎户座备受研究的星际云里。猎户腰带下方有一片明亮但模糊的光斑,它看来或许也有点眼熟,这是因为它是名为猎户大星云的恒星孕育室。最后是肉眼勉强可见但相当引人注目的巴纳德环,这团环拱在猎户腰带和猎户大星云周围的庞大发射星云,是由猎户座摄影先锋巴纳德发现于100多年前。(Betelgeuse 参宿四; Rigel 参宿七; Bellatrix 参宿五; Barnard's Loop 巴纳德环; Hatysa 伐三; Alnitak 参宿一; Alnilam 参宿二; Mintaka 参宿三; Saiph 参宿六; Cursa 玉井三-波江座){lamp/}原文:{mtitle title="The Orion You Can Almost See"/}Image Credit & Copyright: Michele GuzziniExplanation: Do you recognize this constellation? Although it is one of the most recognizable star groupings on the sky, this is a more full Orion than you can see -- an Orion only revealed with long exposure digital camera imaging and post-processing. Here the cool red giant Betelgeuse takes on a strong orange tint as the brightest star on the upper left. Orion's hot blue stars are numerous, with supergiant Rigel balancing Betelgeuse on the lower right, and Bellatrix at the upper right.Lined up in Orion's belt are three stars all about 1,500 light-years away, born from the constellation's well-studied interstellar clouds.Just below Orion's belt is a bright but fuzzy patch that might also look familiar -- the stellar nursery known as Orion's Nebula. Finally, just barely visible to the unaided eye but quite striking here is Barnard's Loop -- a huge gaseous emission nebula surrounding Orion's Belt and Nebula discovered over 100 years ago by the pioneering Orion photographer E. E. Barnard.
2024年01月16日
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2023-04-07
2023年04月07日:参宿七的大视野影像-(Rigel Wide)
2023年04月07日:参宿七的大视野影像-(Rigel Wide)--原图下载{mtitle title="参宿七的大视野影像"/}Image Credit &Copyright: Rheinhold Wittich说明: 在地球的夜空中,明亮泛蓝的超巨星参宿七位在猎户座的足部。在这幅极深空的广视野影像里,定名为猎户β星的参宿七,位于这片非常深且宽的视野之中心。参宿七的泛蓝星色显示, 它远比在猎户座里与它争辉的泛黄参宿四(猎户α星)炽热,不过二者的质量都够大,最终都会以星核崩塌超新星爆炸的方式结束生命。距离地球约860光年远的参宿七,也比太阳要炽热,半径则是太阳的74倍之多,故其外围大约可伸展到水星轨道附近。在这片呈现星云密布的猎户座之10度宽视野里,猎户大星云位于左上角。在参宿七的右侧,可见到被它明亮泛蓝星光照亮的女巫头星云。参宿七是一个多星系统的成员,不过它的伴星都很昏暗。{lamp/}原文:{mtitle title="Rigel Wide"/}Image Credit &Copyright: Rheinhold WittichExplanation: Brilliant, blue, supergiant star Rigelmarks the foot of Orion the Hunter inplanet Earth's night.Designated Beta Orionis,it's at the center of this remarkablydeep and wide field of view. Rigel's blue color indicates that it is much hotter than itsrival supergiant in Orion the yellowishBetelgeuse (Alpha Orionis),though both stars are massive enough to eventuallyend their daysascore collapse supernovae.Some 860 light-years away, Rigel is hotter than the Sun tooand extends to about 74 times the solar radius.That's about the size of the orbit of Mercury.In the 10 degree wide frame toward the nebula richconstellation, the Orion Nebula is at the upper left.To the right of Rigel and illuminated by its brilliant blue starlightlies the dusty Witch Head Nebula.Rigel is partof a multiple star system, though its companion starsare much fainter.
2023年04月07日
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2022-01-02
2022年01月02日:寒冬道路上空的四重月晕-(Quadruple Lunar Halo Over Winter Road)
2022年01月02日:寒冬道路上空的四重月晕-(Quadruple Lunar Halo Over Winter Road)--原图下载{mtitle title="寒冬道路上空的四重月晕"/}Image Credit & Copyright: Dani Caxete说明: 有时候,飘落的冰晶让大气成为巨型透镜,造就了太阳或月亮周围的光弧与光晕。在2012年的某个星期六夜晚,于西班牙.马德里附近拍下的冬天星空里,不但拍到明月,更记录了罕见的四重月晕即可为见证。在这幅主题影像顶缘附近的最明亮天体是月亮。其月华受到飘落的六角形冰晶之折射,产生月亮周围有点罕见的22度月晕。让22度月晕在水平方向有点外扩的,是稍更罕见、由柱状冰晶所产生的外晕。而部分月光受到外围较远的冰晶折射,产生美丽冬季地景上方,像彩虹的第三重、更罕见之46度下虹弧。此外,还可看见部分的46度月晕;于是这幅影像,记录了对月亮而言,极端罕见的四重月晕。在远方的背景星空里,有出现在内与外层月弧之间,冬季星空中着名的天狼星、猎人腰带三星、及参宿四。月晕和月弧通常可持续数分钟到数小时之久。所以,当你见到这类的大气透镜景观时,请务必与家人、好友、和邻居分享。(释注:22-degree halo 22度晕;circumscribed halo 外晕;infralateral arc 下虹弧; 46-degree halo 46度晕){lamp/}原文:{mtitle title="Quadruple Lunar Halo Over Winter Road"/}Image Credit & Copyright: Dani CaxeteExplanation: Sometimes falling ice crystals make the atmosphere into a giant lens causing arcs and halos to appear around the Sun or Moon.One Saturday night in 2012 was just such a time nearMadrid,Spain,where a winter sky displayed not only a bright Moon but four rare lunar halos. The brightest object, near the top of the featured image, is the Moon.Light from the Moonrefracts through tumbling hexagonal ice crystals into a somewhat rare22-degree haloseen surrounding the Moon.Elongating the 22-degree arc horizontally is a more rare circumscribed halo caused by column ice crystals.Even more rare, some moonlight refracts through more distant tumbling ice crystals to form a (third)rainbow-like arc 46 degrees from the Moon and appearing here just above a picturesque winter landscape.Furthermore, part of a whole 46-degree circular halo is also visible, so that an extremely rare -- especially for the Moon -- quadruple halo was captured.Far in the background is a famous winter skyscape that includesSirius, thebelt of Orion, andBetelgeuse -- visible between the inner and outer arcs.Halos and arcs typically last for minutes to hours, so if you do see one there should be time to invite family, friends or neighbors toshare your unusual lensed vista of the sky.
2022年01月02日
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2021-01-12
2021年01月12日:古巴西的星座-(A Historic Brazilian Constellation)
[2021年01月12日:古巴西的星座-(A Historic Brazilian Constellation)--原图下载](https://apod.nasa.gov/apod/image/2101/OldMan_Guerra_6000.jpg"onMouseOver="if (document.images)document.imagename1.src='image/2101/OldMan_Guerra_960.jpg';"onMouseOut="if (document.images)document.imagename1.src='image/2101/OldMan_Guerra_960_lines.jpg';){mtitle title="古巴西的星座"/}Image Credit & Copyright: Rodrigo Guerra说明: 夜空到处都是故事。历史上的人类文明,经常以他们流传久远的传奇人物,来为上方的星空命名。而世世代代的人们,眼观这些星座,耳闻相关的故事,然后再把它们流传下去。在这张主题影像里,我们并不熟悉的老人星座 ,就是目前住在巴西的南美洲原住民图皮人眼中的夜空星座之一。依现代的认知,这个星座的头部可能是毕宿星团,而猎户腰带是老人的一条腿,而在图皮人传说中,另一条腿则被他狂怒的妻子给砍了,剩下以橙红参宿四为断点的半条腿。而影像左缘附近的昴宿星团,可能是他的羽冠。在这幅主题影像里,这位跛脚的老人有在前景入镜的凡人为伴。与夜空相关的传说有其重要性,因为它代表文化的传承,更记录了人类特有的智慧和想像力。{lamp/}原文:{mtitle title="A Historic Brazilian Constellation"/}Image Credit & Copyright: Rodrigo GuerraExplanation: The night sky is filled with stories.Cultures throughout history have projected some of their most enduring legends onto the stars above.Generations of people see these stellar constellations, hear the associated stories, and pass them down.Featured here is the perhaps unfamiliar constellation of the Old Man, long recognized by the Tupi peoples native to regions of South America now known as Brazil. The Old Man, in more modern vernacular, may be composed of the Hyades star cluster as his head and the belt of Orion as part of one leg. Tupi folklore relates that the other leg was cut off by his unhappy wife, causing it to end at the orange star now known as Betelgeuse.The Pleiades star cluster, on the far left, can be interpreted as a head feather.In the featured image, the hobbled Old Man is mirrored by a person posing in the foreground. Folklore of the night sky is important for many reasons, including that it records cultural heritage and documents the universality of human intelligence and imagination.
2021年01月12日
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2020-12-25
2020年12月25日:北半球冬季的星空-(Northern Winter Night)
2020年12月25日:北半球冬季的星空-(Northern Winter Night)--原图下载{mtitle title="北半球冬季的星空"/}Image Credit &Copyright:Adam Block说明: 在北半球的冬夜里,猎户座斜躺着东升。在这幅色彩缤纷的夜空影像里,我们很熟悉的猎户座众星,看似悬在这些绿树的上空。其中,不是恒星、但肉眼依然可见的猎户大星云,挂在猎户腰带三星的下方。这个恒星育婴室散发的粉红辉光,在此幅影像里依稀可辨。猎户肩部的巨星参宿四,带着人间灯火的暖色,而视野里色泽相近的恒星,还有巨星毕宿五。毕宿五这颗金牛座最明亮的恒星,是影像顶端V型毕宿星团的定锚天体。{lamp/}原文:{mtitle title="Northern Winter Night"/}Image Credit &Copyright:Adam BlockExplanation: Orion always seems to come up sideways onnorthern winter evenings.Those familiar stars of the constellation of the Hunterare caught above the trees in this colorful night skyscape.Not a star at all but still visible to eye,the GreatNebula of Orionshines below the Hunter's belt stars.The camera's exposurereveals the stellar nursery's faint pinkish glow.Betelgeuse,giant star at Orion's shoulder, has the colorof warm and cozy terrestrial lighting,but so does another familiar stellar giant, Aldebaran.Alpha star of the constellation Taurus the Bull, Aldebaran anchors therecognizable V-shape traced by theHyades Cluster toward the top of the starry frame.
2020年12月25日
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2020-10-21
2020年10月21日:萨丁尼亚岛的夜空-(A Night Sky Vista from Sardinia)
[2020年10月21日:萨丁尼亚岛的夜空-(A Night Sky Vista from Sardinia)--原图下载](https://apod.nasa.gov/apod/image/2010/Quantrids_Slovinsky_2048.jpg"onMouseOver="if (document.images)document.imagename1.src='image/2010/Quantrids_Slovinsky_960_annotated.jpg';"onMouseOut="if (document.images)document.imagename1.src='image/2010/Quantrids_Slovinsky_960.jpg';){mtitle title="萨丁尼亚岛的夜空"/}Image Credit & Copyright: Tomáš Slovinský说明: 在这张影像里,你能认出多少着名的天体呢?这张组合60张涵盖220度天空照片的主题暗空影像,是名副其实的星空珍寳大观园。其中,轻易可见的标誌性天体,有猎户腰带、猎户大星云、仙女大星系、加州星云、和亮星天狼及参宿四。如果你需要确认你所见,可以参考上面这幅影像的加注版。稍难辨认的,则有北极星和北斗七星。除此之外,还可见到数颗来自象限仪流星雨的流星、红和绿气辉、与2位天文摄影者的友人。这幅影像是在今年1月,摄于义大利的萨丁尼亚岛。今晚你可亲眼观赏夜空的珍宝,其中包括数量众多的流星,因为狮子座流雨的极大期就在今晚。(Sardinia 萨丁尼亚岛、撤丁岛){lamp/}原文:{mtitle title="A Night Sky Vista from Sardinia"/}Image Credit & Copyright: Tomáš SlovinskýExplanation: How many famous sky objects can you find in this image? The featured dark sky composite combines over 60 exposures spanning over 220 degrees to create a veritable menagerie of night sky wonders.Visible celestial icons include the Belt of Orion, theOrion Nebula, the Andromeda Galaxy, the California Nebula, and bright stars Sirius and Betelgeuse. You can verify that you found these, if you did, by checking an annotated version of the image. A bit harder, though, is finding Polaris and the Big Dipper.Also discernible are several meteors from the Quandrantids meteor shower, red and green airglow, and two friends of the astrophotographer. The picture was captured in January from Sardinia, Italy. You can see sky wonders in your own night sky tonight -- including more meteors than usual -- because tonight is near peak of the yearly Orionids meteor shower.
2020年10月21日
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