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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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2023-12-29
2023年12月29日:太空中的莎翁名剧人物-(Shakespeare in Space)
2023年12月29日:太空中的莎翁名剧人物-(Shakespeare in Space)--原图下载{mtitle title="太空中的莎翁名剧人物"/}Image Credit: NASA, ESA, CSA,STScI说明: 在1986年,航行者2号成为唯一近距离探索冰质巨行星─天王星的太空船。儘管如此,这张来自韦伯太空望远镜近红外线相机的新影像,仍然可以为详细观测这颗遥远行星提供参考。这颗侧倾的外围行星,大约每17小时绕轴自转一圈。在这幅影像里,它目前的北极指向很接近视线方向,故得以直接看到它的北半球和昏暗但宽广的环系。这颗巨行星拥有27颗已知的卫星,其中的14颗在影像里加上了注记。部分较明亮的卫星之身影,隐约镶着韦伯光学系统所造成的特徵衍射峰。儘管这些太阳系外围的卫星,在莎士比亚的年代还未为人所知,但是天王星的27颗卫星中,除了2颗之外,其他的卫星都是以这位英国诗人戏剧中的人物为名。{lamp/}原文:{mtitle title="Shakespeare in Space"/}Image Credit: NASA, ESA, CSA,STScIExplanation: In 1986, Voyager 2 became the only spacecraftto exploreice giant planet Uranusclose up.Still, this newly released imagefrom the NIRCam (Near-Infrared Camera)on the James Webb Space Telescope offers adetailed look at the distant world.The tilted outer planet rotates on its axis once in about 17 hours.Its north pole is presently pointed near our line of sight,offering direct views of its northern hemisphere and afaint but extensive system of rings.Of the giant planet's 27 known moons, 14 areannotated in the image.Mixed with fuzzy background galaxies,the brighter moons show hints of Webb's characteristicdiffraction spikes.And though these worlds of the outer Solar Systemwere unknown inShakespearean times,all but two of the 27 Uranian moons arenamedfor characters in the English bard's plays.
2023年12月29日
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2023-08-19
2023年08月19日:海王星:带环冰质巨行星-(Ringed Ice Giant Neptune)
2023年08月19日:海王星:带环冰质巨行星-(Ringed Ice Giant Neptune)--原图下载{mtitle title="海王星:带环冰质巨行星"/}Image Credit: NASA,ESA,CSA,STScI,NIRCam说明: 在这幅由韦伯太空望远镜所拍摄的清晰近红光影像里,带环冰质巨行星─海王星位于影像的中心附近。这颗昏暗的天体是离太阳最遥远的行星,与太阳的距离大约为地球的30倍。而在这幅令人讚叹的韦伯影像里,这颗行星之所以会有黝黑幽灵般的外观,则是因为它大气中的甲烷吸收红外光所致。此外,在这幅影像里,伸展到海王星高吸收甲烷上方的高层云清楚可辨。影像中,位在左上方、包裹着氮冰、比海王星要明亮的海王星最大卫星海卫一,周围带着韦伯望远镜特徵性的衍射芒。在这片视野里,包括海卫一在内共可辨认出海王星14颗已知卫星中的7颗。在这张摄于太空的行星新影像里,海王星暗淡的行星环格外引人注目。自1989年8月航行者2号太空船造访海王星以来,这是首次再见到了海王星複杂环系的细节。{lamp/}原文:{mtitle title="Ringed Ice Giant Neptune"/}Image Credit: NASA,ESA,CSA,STScI,NIRCamExplanation: Ringed ice giant Neptunelies near the center of this sharpnear-infrared image from theJames Webb Space Telescope.The dim and distant world is thefarthest planet from the Sun,about 30 times farther away than planet Earth.But in the stunning Webb view, the planet's dark and ghostly appearanceis due to atmospheric methane that absorbs infrared light.High altitude clouds that reach above most of Neptune's absorbing methaneeasily stand out in the image though.Coated with frozen nitrogen, Neptune's largest moon Triton isbrighter than Neptune in reflected sunlight,seen at the upper left sporting the Webb telescope's characteristicdiffraction spikes.Including Triton, seven of Neptune's 14 known moons can beidentifiedin the field of view.Neptune's faint ringsare striking in this space-basedplanetary portrait.Details of the complex ring system are seen here for the firsttime since Neptune was visited by theVoyager 2 spacecraft in August 1989.
2023年08月19日
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2023-07-28
2023年07月28日:年轻恆星与喷流-(Young Stars, Stellar Jets)
2023年07月28日:年轻恆星与喷流-(Young Stars, Stellar Jets)--原图下载{mtitle title="年轻恆星与喷流"/}Image Credit:NASA,ESA,CSA,Processing: Joseph DePasquale(STScI)说明: 在这幅由韦伯太空望远镜近红外光相机所拍摄的影像里,起源自一对形成中年轻恒星的高速分子气体外泛流,散发出明亮的红外辉光。而这对编录号为HH(Herbig-Haro)46/47的年轻恒星,则镶在一团几乎不透可见光的黝黑星云里。在这幅近红外光影像里,这对恒星位于醒目的泛红衍射芒的中心;而它们强烈的恒星喷流伸展了将近1光年,并穿透黝黑的星际物质。对韦伯望远镜的红外光相机来说,位在航帆座内、距离只有1,140光年远的这个年轻的恒星系统,是非常值得探索的标的。{lamp/}原文:{mtitle title="Young Stars, Stellar Jets"/}Image Credit:NASA,ESA,CSA,Processing: Joseph DePasquale(STScI)Explanation: High-speed outflows of molecular gas from a pair of actively formingyoung stars shine in infrared light, revealing themselves inthis NIRcam imagefrom the James Webb Space Telescope.Cataloged as HH (Herbig-Haro) 46/47, the young stars arelodged within a dark nebulathat is largely opaque when viewed in visible light. The pair lie at the center of the prominent reddishdiffraction spikesin the NIRcam image. Theirenergetic stellar jetsextend for nearly a light-year,burrowing intothe dark interstellar material.A tantalizing object to explore with Webb's infrared capabilities, thisyoung star systemis relatively nearby,located only some 1,140 light-years distant in the nauticalconstellation Vela.
2023年07月28日
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2023-07-13
2023年07月13日:韦伯望远镜的心宿增四星云-(Webb's Rho Ophiuchi)
2023年07月13日:韦伯望远镜的心宿增四星云-(Webb's Rho Ophiuchi)--原图下载{mtitle title="韦伯望远镜的心宿增四星云"/}Image Credit:NASA,ESA,CSA,STScI,Klaus Pontoppidan (STScI),Processing: Alyssa Pagan (STScI)说明: 距离我们仅有390光年的蛇夫座心宿增四星云複合体,是最邻近地球的恒星形成区,而类太阳恒星及未来的行星系统正形成于其中。韦伯太空望远镜的近红外相机,最近以空前细緻的尺度,为这个混乱喧嚣的育婴室拍下了这幅红外光影像。并以这幅刚发布壮丽的宇宙快照,来庆贺韦伯望远镜探索宇宙的第一年任务大获成功。这幅影像呈现心宿增四星云不到1光年的区域及大约50颗年轻恒星。其中较亮的恒星,更带着韦伯望远镜特有的衍射芒。源自新诞生恒星的庞大激震分子氢喷流,在此影像里以红色来呈现,此外,还可见到一个大型的泛黄尘埃空穴,及其中心附近清出这个空穴的活跃年轻恒星。在这幅引人讚叹影像的部分恒星附近,甚至可见到它们的原行星盘所投射的影子。(Rho Ophiuchi 心宿增四星云){lamp/}原文:{mtitle title="Webb's Rho Ophiuchi"/}Image Credit:NASA,ESA,CSA,STScI,Klaus Pontoppidan (STScI),Processing: Alyssa Pagan (STScI)Explanation: A mere 390 light-years away,Sun-like stars and future planetary systems are forming inthe Rho Ophiuchi molecular cloud complex,the closest star-forming region to our fair planet.The James Webb Space Telescope's NIRCam peeredinto the nearby natal chaosto capture this infrared image atan inspiring scale.The spectacular cosmic snapshot was released to celebrate the successfulfirst year ofWebb's explorationof the Universe.The frame spansless than a light-year across the Rho Ophiuchi regionand contains about 50 young stars.Brighter stars clearly sport Webb's characteristic pattern ofdiffraction spikes.Huge jets of shocked molecular hydrogenblasting fromnewborn stars are red in the image, withthe large, yellowish dusty cavity carved out by the energeticyoung star near its center.Near some stars in the stunning image are shadows cast by theirprotoplanetary disks.
2023年07月13日
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2022-09-23
2022年09月23日:带环冰质巨行星─海王星-(Ringed Ice Giant Neptune)
2022年09月23日:带环冰质巨行星─海王星-(Ringed Ice Giant Neptune)--原图下载{mtitle title="带环冰质巨行星─海王星"/}Image Credit: NASA,ESA,CSA,STScI,NIRCam说明: 在这幅由韦伯太空望远镜所拍摄的清晰近红光影像里,带环冰质巨行星─海王星位在影像中心附近。这颗昏暗且遥远的天体是离太阳最远的行星,距离约是地球的30倍。然而在这幅令人讚叹的韦伯影像里,这颗行星之所以会有黝黑幽灵般的外观,则是由于它大气中的甲烷吸收红外光所致。不过,在这幅影像里,伸展到海王星高吸收甲烷上方的高层云却清楚可辨。此外,出现在左上方、比海王星要明亮的海王星最大卫星海卫一,周围带着韦伯望远镜特徵性的衍射芒。 在这片视野里,包括海卫一在内共可辨认出海王星14颗已知卫星中的7颗。在这张刚在太空拍摄的行星影像里,海王星暗淡的行星环格外引人注目。自1989年8月航行者2号太空船造访海王星以来,这是首次再见到了海王星複杂环系的细节。.{lamp/}原文:{mtitle title="Ringed Ice Giant Neptune"/}Image Credit: NASA,ESA,CSA,STScI,NIRCamExplanation: Ringed, ice giant Neptunelies near the center of this sharpnear-infrared image from theJames Webb Space Telescope.The dim and distant world is thefarthest planet from the Sun,about 30 times farther away than planet Earth.But in the stunning Webb view the planet's dark and ghostly appearanceis due to atmospheric methane that absorbs infrared light.High altitude clouds that reach above most of Neptune's absorbing methaneeasily stand out in the image though.Coated with frozen nitrogen, Neptune's largest moon Triton isbrighter than Neptune in reflected sunlight and is seen at upper leftsporting the Webb's characteristicdiffraction spikes.Including Triton, seven of Neptune's 14 known moons can beidentifiedin the field of view.Neptune's faint ringsare striking in this new space-based planetary portrait.Details of the complex ring system are seen here for the firsttime since Neptune was visited by theVoyager 2 spacecraft in August 1989.
2022年09月23日
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2015-10-12
2015年10月12日:星系、恆星与尘埃-(Galaxy, Stars, and Dust)
2015年10月12日:星系、恆星与尘埃-(Galaxy, Stars, and Dust)--原图下载{mtitle title="星系、恆星与尘埃"/}Image Credit & Copyright: Eric Coles and Mel Helm说明: 这个星系被网状的尘埃给困住了吗?当然不是,因为它位在背景远处。不过在这片深空影像里,倒是到处散布着带星芒的恒星和形状怪异的云气。这片规画佳妙的视野,涵盖了飞马座内大约一个满月宽度的天区。影像中,近在我们银河系之内的较明亮恒星之所以带着绕射星芒,则是反射式望远镜内部支撑结构所造成的常见效应。在银盘的上方,高悬着黯淡却无所不在的星际尘埃云,而且淡淡地反射着银河所共同发出的星光;它们名为高纬度卷云或共同照耀星云,是分子云之属。在此例之中,这团离我们不过1千光年远、充满视野的弥漫星云之编录号为MBM 54。而看似和尘埃纠缠在一起的星系,则是离我们约6千万光年远的螺旋星系NGC 7497。影像中心几乎侧视的NGC 7497,其螺旋臂和尘埃带在色泽上酷似银河系的恒星和尘埃。{lamp/}原文:{mtitle title="Galaxy, Stars, and Dust"/}Image Credit & Copyright: Eric Coles and Mel HelmExplanation: Spiky stars and spooky shapes abound inthis deep cosmic skyscape.Its well-composed field of view coversabout a Full Moon on thesky toward the constellation Pegasus.Of course the brighter stars show diffraction spikes, the commonlyseen effect of internalsupportsin reflecting telescopes, and liewell within our own Milky Way galaxy.The faint but pervasive clouds of interstellar dustride above the galactic plane and dimly reflect theMilky Way'scombined starlight.Known as high latitude cirrus or integrated flux nebulae they areassociated with molecular clouds.In this case, the diffuse cloud cataloged asMBM 54,less than a thousand light-years distant, fills the scene.The galaxy seemingly tangled in the dust is the striking spiral galaxy NGC 7497some 60 million light-years away.Seen almost edge-onnear the center of the field,NGC 7497's own spiral arms and dust lanes echo the colors of theMilky Way's stars and dust.
2015年10月12日
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