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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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2022-04-23
2022年04月23日:M104: 草帽星系-(Messier 104)
2022年04月23日:M104: 草帽星系-(Messier 104)--原图下载{mtitle title="M104: 草帽星系"/}Image Credit: NASA, ESA, Hubble Legacy Archive; Processing & Copyright: Ignacio Diaz Bobillo说明: 壮丽的螺旋星系M104,是以它接近侧向的宽广圈状黝黑尘埃带着称。在鼓胀星系核心的明亮恒星之衬托下,这道宇宙尘埃带让星系看似戴着宽边帽,因而让星系博得草帽星系 的暱称。上面这幅此着名星系的清晰照片,结合了超过10小时的哈伯太空望远镜影像数据,以呈现通常淹没在M104明亮鼓核炫光中的暗淡细微结构。亦名为NGC 4594的草帽星系,在所有电磁波段都得见,因此咸认它的核心藏有超大质量黑洞。M104离我们约2千8百万光年远,大小则在50,000光年左右,是室女座星系团南缘最大的成员星系之一。而在这片视野里的带芒天体,则是近在我们银河系之内的前景恒星。{lamp/}原文:{mtitle title="Messier 104"/}Image Credit: NASA, ESA, Hubble Legacy Archive; Processing & Copyright: Ignacio Diaz BobilloExplanation: A gorgeous spiral galaxy,Messier 104 is famousfor its nearly edge-onprofile featuring a broad ring of obscuring dust lanes.Seen in silhouette against an extensive central bulge of stars,the swath of cosmic dust lends abroad brimmed hat-like appearance to the galaxy suggestinga more popular moniker, the Sombrero Galaxy.This sharp viewof the well-known galaxy was madefrom over 10 hours ofHubble Space Telescopeimage data, processed tobring out faint details often lost in the overwhelming glare of M104'sbright central bulge.Also known as NGC 4594, the Sombrero galaxy can be seenacross the spectrum, andis host to a centralsupermassive black hole.About 50,000 light-years across and 28 million light-years away,M104 is one of thelargest galaxies at the southern edge of theVirgo Galaxy Cluster.Still, the spiky foreground stars in this field of viewlie well within our own Milky Way.
2022年04月23日
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2022-04-19
2022年04月19日:奔鸡星云的恆星与云球-(Stars and Globules in the Running Chicken Nebula)
2022年04月19日:奔鸡星云的恆星与云球-(Stars and Globules in the Running Chicken Nebula)--原图下载{mtitle title="奔鸡星云的恆星与云球"/}Image Credit & Copyright: Stefan Steve Bemmerl说明: 这头庞大鸡只的"蛋"或许会形成恒星。这幅影像以带有科学意涵色泽所呈现的发射星云,其编录号是IC 2944,此外也因其外观而有奔鸡星云的称号。在影像底端的小暗色分子云,则是富含会遮蔽星光的宇宙尘埃。这些因其发现者而名为萨克雷云球的天体,是可能会发生重力塌缩形成新恒星的"星蛋",然而它们同时也受到邻近年轻恒星强烈辐射的快速侵蚀,因此命运未定。这些结块的辉光云气、纹理繁複的反射星云与大质量的活跃恒星,共同组成了疏散星团Collinder 249。这片壮丽的星空,以星云6,500光年的估计距离来换算,大约绵延了60光年。(Running Chicken Nebula 奔鸡星云; Thackeray's Globules 萨克雷云球){lamp/}原文:{mtitle title="Stars and Globules in the Running Chicken Nebula"/}Image Credit & Copyright: Stefan Steve BemmerlExplanation: The eggs from this gigantic chicken may form into stars. The featured emission nebula, shown in scientifically assigned colors, is cataloged as IC 2944 but known as the Running Chicken Nebula for the shape of its greater appearance. Seen toward the bottom of the image are small, dark molecular clouds rich in obscuring cosmic dust.Called Thackeray's Globules for their discoverer, these "eggs" are potential sites for the gravitational condensation of new stars, although their fates are uncertain as they are also being rapidly eroded away by the intense radiation from nearby young stars.Together with patchy glowing gas and complex regions of reflecting dust, these massive and energetic stars form the open cluster Collinder 249.This gorgeous skyscape spans about 60 light-yearsat the nebula's estimated 6,500 light-year distance.
2022年04月19日
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2022-01-14
2022年01月14日:NGC 1566:西班牙舞者螺旋星系-(NGC 1566: The Spanish Dancer Spiral Galaxy)
2022年01月14日:NGC 1566:西班牙舞者螺旋星系-(NGC 1566: The Spanish Dancer Spiral Galaxy)--原图下载{mtitle title="NGC 1566:西班牙舞者螺旋星系"/}Image Credit &Copyright:Mark HansonandMike Selby说明: 由数十亿颗恒星聚成的NGC 1566,是个位在南天剑鱼座方向约6千万光年远处的宇宙岛。从我们所在的银河系看出去,这个更常称为“西班牙舞者螺旋星系”的天体为正向星系。分类为宏伟螺旋星系的NGC 1566,拥有二道长超过10万光年的优美螺旋臂,上头镶着明亮的泛蓝星团、粉红恒星形成区、及黝黑涡旋状的宇宙尘埃。NGC 1566拥有经常爆发的活跃星系核,而它也是离我们最近最明亮的西佛型螺旋星系。其核心可能藏着一颗超大质量的黑洞,不停肆虐周遭的恒星、气体和尘埃。 在这幅南天星系的清晰影像里,带星芒的恒星近在银河系之内。{lamp/}原文:{mtitle title="NGC 1566: The Spanish Dancer Spiral Galaxy"/}Image Credit &Copyright:Mark HansonandMike SelbyExplanation: An island universeof billions of stars,NGC 1566 lies about 60 million light-years away in the southernconstellationDorado.Popularly known as the Spanish Dancer galaxy, it's seen face-on from ourMilky Way perspective.A gorgeous grand design spiral, this galaxy'stwo graceful spiral arms span over 100,000 light-years,traced by bright blue star clusters,pinkish starforming regions, and swirlingcosmic dustlanes.NGC 1566'sflaring center makes the spiral one of the closest and brightest Seyfertgalaxies.It likely houses a central supermassive black hole wreaking havoc on surrounding stars, gas, and dust.In this sharp southern galaxy portrait,the spiky stars lie well within the Milky Way.
2022年01月14日
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2021-08-13
2021年08月13日:M74:完美的螺旋星系-(A Perfect Spiral)
2021年08月13日:M74:完美的螺旋星系-(A Perfect Spiral)--原图下载{mtitle title="M74:完美的螺旋星系"/}Image Credit: NASA, ESA, Hubble, HLA; Processing: Mehmet Hakan Ozsarac说明: 如果它还不够完美,那这个螺旋星系至少是最上相者之一。拥有约1千亿颗恒星的宇宙岛M74,是双鱼座方向离我们约3千2百万光年远的壮丽正向星系。分类为Sc星系的M74,它宏伟且优雅的螺旋臂上镶着明亮的泛蓝星团和黝黑的尘埃带。这幅清晰的组合影像,则建构自哈伯太空望远镜.先进巡天相机拍摄的影像数据。这幅呈现M74面上约30,000光年区域的影像,整合了记录氢原子辐射的照片,以突显此星系大型恒星形成区的泛红辉光。M74的表面亮度低于梅西叶星表收录的大多数星系,因此它亦有幽灵星系的称号。{lamp/}原文:{mtitle title="A Perfect Spiral"/}Image Credit: NASA, ESA, Hubble, HLA; Processing: Mehmet Hakan OzsaracExplanation: If not perfect then thisspiralgalaxy is at least one of the most photogenic.An island universe of about 100 billion stars,32 million light-years away toward the constellation Pisces,M74 presentsa gorgeous face-on view.Classified asan Sc galaxy,the grand design of M74's graceful spiralarms are traced by bright bluestar clusters and dark cosmic dustlanes.This sharp compositewas constructed from image data recorded by the Hubble Space Telescope'sAdvanced Camera for Surveys.Spanning about 30,000 light-years across theface of M74, it includes exposures recording emission fromhydrogen atoms, highlighting the reddish glow of thegalaxy's large star-forming regions.With a lower surface brightness than most galaxies in theMessier catalog,M74 is sometimes known as thePhantom Galaxy.
2021年08月13日
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2021-05-14
2021年05月14日:M104:草帽星系-(M104: The Sombrero Galaxy)
2021年05月14日:M104:草帽星系-(M104: The Sombrero Galaxy)--原图下载{mtitle title="M104:草帽星系"/}Image Credit &Copyright:Bray Falls说明: 壮丽的螺旋星系M104,是以它几乎侧向的宽广圈状黝黑尘埃带着称。而在鼓胀星系核心明亮恒星的衬托下,这道黝黑的宇宙尘埃带,让星系看似戴着宽边帽,因而让它博得草帽星系的雅号。 上面这幅此着名星系的可见光影像,建构自地面影像数据建构并经过特别处理,以保存通常因M104星系明亮核心炫光而不得见的细部结构。亦名为NGC 4594的草帽星系,因星系核藏有超大质量黑洞,故在所有电磁波段都可见。 离我们约2千8百万光年远的M104 ,宽约50,000光年,是室女座星系团南缘最大的星系之一。不过视野里带星芒的恒星,则是近在我们银河系之内的前景天体。{lamp/}原文:{mtitle title="M104: The Sombrero Galaxy"/}Image Credit &Copyright:Bray FallsExplanation: A gorgeous spiral galaxy,M104 is famousfor its nearly edge-onprofile featuring a broad ring of obscuring dust lanes.Seen in silhouette against an extensive central bulge of stars,the swath of cosmic dust lends abroad brimmed hat-like appearance to the galaxy suggestinga more popular moniker, the Sombrero Galaxy.This sharp optical view of the well-known galaxy madefrom ground-based image data was processed to preservedetails often lost in overwhelming glare of M104'sbright central bulge.Also known as NGC 4594, the Sombrero galaxy can be seenacross the spectrum, andis host to a centralsupermassive black hole.About 50,000 light-years across and 28 million light-years away,M104 is one of thelargest galaxies at the southern edge of theVirgo Galaxy Cluster.Still the colorful spiky foreground stars in this field of viewlie well within our own Milky Way galaxy.
2021年05月14日
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2020-02-15
2020年02月15日:船底座大星云特写-(Carina Nebula Close Up)
2020年02月15日:船底座大星云特写-(Carina Nebula Close Up)--原图下载{mtitle title="船底座大星云特写"/}Image Credit: NASA, ESA, Hubble, ESO,Amateur Data; Processing & Copyright: Robert Gendler & RobertoColombari说明: 南天的珍宝之一的船底座大星云,亦名为NGC 3372,跨幅超过300光年,是我们银河系最大的恒星形成区之一。和北天较小的猎户座大星云相似,船底座大星云也是肉眼轻易可见的天体,但它距离有7,500光年,比猎户座大星云要远上5倍。这幅壮丽、宽约20光年的望远镜特写影像,无比清晰细緻的呈现了此星云中心区的明亮星际云气丝和黝黑尘埃云。船底座大星云是一些极大质量年轻恒星的家园,其中包括神祕质量超过太阳百倍以上的狂暴海山二系统。在这幅整合太空及地面影像数据的影像里,看似环拱着海山二的双瓣侏儒星云,出现在影像的中左下方。海山二星可能即将发生超新星爆炸,而X射线波段的观测也指出,船底座大星云是个名副其实的超新星工厂。{lamp/}原文:{mtitle title="Carina Nebula Close Up"/}Image Credit: NASA, ESA, Hubble, ESO,Amateur Data; Processing & Copyright: Robert Gendler & RobertoColombariExplanation: A jewel of the southern sky, theGreatCarina Nebula, also known as NGC 3372, spans over 300 light-years,one of our galaxy's largest star forming regions.Like the smaller, more northerly Great Orion Nebula, the Carina Nebula is easily visible to the unaided eye, though at a distance of 7,500 light-years it is some 5 times farther away.Thisgorgeous telescopic close-upreveals remarkable details of the region's central glowing filaments of interstellar gasand obscuring cosmic dust clouds ina field of view nearly 20 light-years across.The Carina Nebula is home to young, extremely massive stars, includingthe still enigmatic and violently variableEta Carinae, astar system with well over 100 times the mass of the Sun.In the processed composite of space and ground-based image dataa dusty, two-lobed Homunculus Nebulaappears to surround Eta Carinae itself justbelow and left of center.While Eta Carinae is likely on the verge of a supernova explosion,X-ray images indicate that the Great Carina Nebulahas been a veritablesupernovafactory.
2020年02月15日
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