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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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2023-07-27
2023年07月27日:波江座的星系-(Galaxies in the River)
2023年07月27日:波江座的星系-(Galaxies in the River)--原图下载{mtitle title="波江座的星系"/}Image Credit &License:CTIO/NOIRLab/DOE/NSF/AURA; R. Colombari, M. Zamani & D. de Martin(NSF’s NOIRLab)说明: 大星系靠吞食小星系来成长。就连我们的银河系,也是星系吞食行为的信奉者,靠得太近、被银河系重力捕获的小星系,会被银河系合併。在宇宙中,星系吞食的现象非常普遍,上面这对位在南天.波江座方向的星系对就是很好的例证。这对离我们5千多万光年远的星系,较大的扭曲螺旋星系NGC 1532,正透过重力和矮星系NGC 1531进行重力缠斗,而对小星系来说,这是一场毫无胜算的战争。侧向着我们的螺旋星系NGC 1532,大小约有100,000光年。这对合併中星系的清晰影像,是由安装在智利.托洛洛山美洲天文台(CTIO).美国国家科学基金会布蓝柯4米望远镜上的暗能量相机所拍摄。NGC 1532/1531星系对,咸认和我们很熟悉的正向螺旋星系对M51很类似。{lamp/}原文:{mtitle title="Galaxies in the River"/}Image Credit &License:CTIO/NOIRLab/DOE/NSF/AURA; R. Colombari, M. Zamani & D. de Martin(NSF’s NOIRLab)Explanation: Large galaxies grow by eating small ones.Even our own galaxy engages ina sort of galacticcannibalism, absorbing small galaxies that are too close andare captured bythe Milky Way's gravity.In fact, thepractice is commonin the universe and illustrated by this striking pair of interactinggalaxiesfrom the banks of the southern constellationEridanus,The River.Located over 50 million light years away,the large, distorted spiral NGC 1532 is seenlocked in a gravitational struggle withdwarf galaxy NGC 1531, a struggle the smaller galaxy willeventually lose.Seen nearly edge-on, spiral NGC 1532 spans about 100,000 light-years.The merging galaxies are capturedin this sharp image from theDark Energy Camera mounted on the National Science Foundation’sBlanco 4-meter Telescope at Cerro Tololo Inter-AmericanObservatory in Chile.The NGC 1532/1531 pair is thought to be similarto the well-studied system of face-on spiral and small companionknown as M51.
2023年07月27日
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2022-06-23
2022年06月23日:螺旋星系NGC 6744-(Spiral Galaxy NGC 6744)
2022年06月23日:螺旋星系NGC 6744-(Spiral Galaxy NGC 6744)--原图下载{mtitle title="螺旋星系NGC 6744"/}Image Credit &Copyright: Basudeb Chakrabarti,Telescope Live说明: 美丽的螺旋星系NGC 6744,宽度将近有175,000光年,比我们的银河系大。然而在小望远镜里,这个位在南天孔雀座方向约3千万光年远处的庞大星系,只是一个暗淡弥漫的天体。在这幅涵盖了约一个满月张角天空的细緻望远镜星系影像里,沿我们的视线方向看出去,这个邻近的宇宙岛几乎是正向着我们。影像中,这个星系庞大泛黄的长棒形核心,源自大量年老的低温恒星所发出的星光。在星系核外头的宏伟螺旋臂上,则散布着年轻的蓝色星团和粉红的恒星形成区。在影像的右下角,它的一道颀长螺旋臂,扫过一个较小伴星系NGC 6744A的前方。NGC 6744的这个伴星系,外观酷似银河系的伴星系─大麦哲伦星系。{lamp/}原文:{mtitle title="Spiral Galaxy NGC 6744"/}Image Credit &Copyright: Basudeb Chakrabarti,Telescope LiveExplanation: Beautiful spiral galaxy NGC 6744is nearly 175,000 light-years across, larger thanour own Milky Way.It lies some 30 million light-years distant in the southernconstellation Pavo but appears as only a faint, extended object insmall telescopes.We see the disk of the nearby island universe tilted towards ourline of sight in this remarkably detailed galaxy portrait,a telescopic view that spans an area about theangular size of a full moon.In it, the giant galaxy'selongated yellowish coreis dominated by the light from old, cool stars.Beyond the core, grand spiral arms are filled withyoung blue star clusters and speckled with pinkish star forming regions.An extended arm sweeps past smaller satellite galaxy NGC 6744Aat the lower right.NGC 6744's galactic companion is reminiscent of the Milky Way'ssatellite galaxy the Large Magellanic Cloud.
2022年06月23日
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2021-10-15
2021年10月15日:NGC 289:南天的涡漩-(NGC 289: Swirl in the Southern Sky)
2021年10月15日:NGC 289:南天的涡漩-(NGC 289: Swirl in the Southern Sky)--原图下载{mtitle title="NGC 289:南天的涡漩"/}Image Credit &Copyright:Mike Selby说明: 在大约7千万光年远处的壮丽螺旋星系NGC 289,比我们的银河系还要大。这个几乎侧向的星系,在明亮的核心和色彩缤纷的中央盘面边缘,接着极为暗淡的泛蓝螺旋臂。而这些幅员宽广的螺旋臂,绵延至远离星系核心超过10万光年之处。此外,在这张清晰的望远镜星系影像的右下方,主螺旋臂看似遇到一个小型、弥漫而且正在和庞大NGC 289进行交互作用的椭圆伴星系。想当然耳,位在这片星野前景带着星芒的恒星,是位在南天玉夫座方向的银河繁星。{lamp/}原文:{mtitle title="NGC 289: Swirl in the Southern Sky"/}Image Credit &Copyright:Mike SelbyExplanation: About 70 million light-years distant, gorgeous spiral galaxy NGC 289 islarger than ourown Milky Way.Seen nearly face-on, its bright core and colorful central disk give wayto remarkably faint, bluish spiral arms.The extensive armssweep well over 100 thousand light-years from the galaxy's center.At the lower right in this sharp,telescopic galaxy portraitthe main spiral arm seems toencounter a small, fuzzy ellipticalcompanion galaxy interacting with enormous NGC 289.Of course spiky stars are in the foreground of the scene.They lie within the Milky Way toward the southern constellationSculptor.
2021年10月15日
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2020-11-25
2020年11月25日:巴塔哥尼亚上空的仙女大星系-(Andromeda over Patagonia)
2020年11月25日:巴塔哥尼亚上空的仙女大星系-(Andromeda over Patagonia)--原图下载{mtitle title="巴塔哥尼亚上空的仙女大星系"/}Image Credit & Copyright: Gerardo Ferrarino说明: 你能看多远?2百50万光年远的仙女大星系,是肉眼轻易可见的最遥远天体。其他夜空中可见的天体,诸如恒星、星团和星云,距离通常介于数百到数千光年之间,而且近在我们银河系之内。以距离来论,仙女大星系的晕光可能也是你能见到最古老的星光。在这幅摄于阿根廷南部.巴塔哥尼亚.巴伊亚溪沙丘的主题影像里,亦名为M31的仙女大星系,是中心处的特写天体。这幅影像组合了在90分钟期间,使用同部相机摄于同一地点的45张背景照片和1幅前景照片。其中,仙女大星系的伴星系 M110,位在M31核心的左下方。能以肉眼见到我们银河系的近邻或许很酷,不过长曝光影相机影像,更能呈现许多暗淡却令人屏息的细节。近来的观测数据指出, that 我们的银河系和仙女大星系在数十亿年里,将会撞在一起并合而为一。{lamp/}原文:{mtitle title="Andromeda over Patagonia"/}Image Credit & Copyright: Gerardo FerrarinoExplanation: How far can you see? The Andromeda Galaxy at 2.5 million light years away is the most distant object easily seen with your unaided eye. Most other apparent denizens of the night sky -- stars, clusters, and nebulae -- typically range from a few hundred to a few thousand light-years away and lie well within our own Milky Way Galaxy. Given its distance, light from Andromeda is likely also the oldest light that you can see. Also known as M31, the Andromeda Galaxy dominates the center of the featured zoomed image, taken from the dunes of Bahía Creek, Patagonia, in southern Argentina. The image is a combination of 45 background images with one foreground image -- all taken with the same camera and from the same location within 90 minutes. M110, a satellite galaxy of Andromenda is visible just below and to the left of M31's core.As cool as it may be to see this neighboring galaxy to our Milky Way with your own eyes, long duration camera exposures can pick up many faint and breathtaking details. Recent data indicates that our Milky Way Galaxy will collide and combine with the similarly-sized Andromeda galaxy in a few billion years.
2020年11月25日
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2018-08-10
2018年08月10日:螺旋星系NGC 6744-(Spiral Galaxy NGC 6744)
2018年08月10日:螺旋星系NGC 6744-(Spiral Galaxy NGC 6744)--原图下载{mtitle title="螺旋星系NGC 6744"/}Image Credit &Copyright:Martin Pugh说明: 庞大美丽的螺旋星系NGC 6744,宽度将近有175,000光年,比我们的银河系大。位在南天孔雀座方向约3千万光年远处的这个星系,在小望远镜里是一个暗淡弥漫的天体。而在我们的视线方向,这个邻近的宇宙岛几乎是正向着我们。这幅无比细緻的星系影像,涵盖了大约一个满月张角的天空。在影像中,这个星系泛黄的长棒形核心,是由大量的年老低温恒星所组成。在星系核外头的宏伟螺旋臂上,则散布着年轻蓝色星团和粉红恒星形成区。在影像左上角,有一道长长的螺旋臂扫过一个较小伴星系的前方。NGC 6744的伴星系,常让我们联想起银河系的伴星系大麦哲伦星系。{lamp/}原文:{mtitle title="Spiral Galaxy NGC 6744"/}Image Credit &Copyright:Martin PughExplanation: Beautiful spiral galaxy NGC 6744is nearly 175,000 light-years across, larger thanour own Milky Way.It lies some 30 million light-years distant in the southernconstellation Pavo and appears as only a faint, extended object insmall telescopes.We see the disk of the nearby island universe tilted towards ourline of sight.Thisremarkably detailed galaxy portrait covers an area aboutthe angular size of the full moon.In it, the giant galaxy's elongated yellowish core is dominated bythe light from old, cool stars.Beyond the core, grand spiral arms are filled withyoung blue star clusters and speckled with pinkish star forming regions.An extended arm sweeps past a smaller satellite galaxy at the upper left.NGC 6744's galactic companion is reminiscent of the Milky Way'ssatellite galaxy the Large Magellanic Cloud.
2018年08月10日
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2018-05-31
2018年05月31日:星系NGC 6744的特写-(NGC 6744 Close Up)
2018年05月31日:星系NGC 6744的特写-(NGC 6744 Close Up)--原图下载{mtitle title="星系NGC 6744的特写"/}Image Credit: NASA,ESA, and theLEGUS team说明: 美丽的螺旋星系NGC 6744,跨幅将近有175,000光年,比我们的银河系要大。位在南天孔雀座方向约3千万光年远处的这个星系,盘面向我们的视线方向倾斜。这幅结合哈伯太空望远镜可见光和紫外光影像数据的此邻近星系特写,涵盖NGC 6744中心宽度约24,000光年的区域。在影像中,这个庞大星系的泛黄核心,是由大量的年老低温恒星所组成,而在星系核外头,可见到散布着粉红恒星形成区和年轻星团的螺旋臂。在以泛蓝和洋红色泽呈现的紫外光波段,这些年轻星团格外明亮。{lamp/}原文:{mtitle title="NGC 6744 Close Up"/}Image Credit: NASA,ESA, and theLEGUS teamExplanation: Beautiful spiral galaxy NGC 6744 is nearly 175,000 light-yearsacross, larger than our own Milky Way.It lies some 30 million light-years distant in the southernconstellation Pavo, its galactic disk tilted towards our line of sight.ThisHubble close-up of the nearby island universe spans about24,000 light-years across NGC 6744's central region ina detailed portrait that combines visible light and ultraviolet image data.The giant galaxy's yellowish coreis dominated by the visible light from old, cool stars.Beyond the core are pinkish star forming regions andyoung star clusters scattered along the inner spiral arms.The young star clusters are bright at ultraviolet wavelengths,shown in blue and magenta hues.
2018年05月31日
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