首页
关于人生天地间
Search
1
2021年09月08日:仙女大星系方向的深空影像-(The Deep Sky Toward Andromeda)
37 阅读
2
欢迎来到人生天地间
26 阅读
3
2017年11月29日:M42:猎户座大星云-(M42: The Great Orion Nebula)
25 阅读
4
2017年08月06日:银河与炸裂的流星-(Milky Way and Exploding Meteor)
13 阅读
5
2024年02月11日:直指月亮的火箭烟尘影子-(Rocket Plume Shadow Points to the Moon)
11 阅读
默认分类
每日天文图
登录
Search
标签搜索
地球
太阳
尘埃
银河系
光年
dust
Sun
哈伯太空望远镜
影像
Hubble Space Telescope
火星
主题影像
Earth
Milky Way Galaxy
上图
木星
土星
美国
太阳系
人生天地间
累计撰写
10,538
篇文章
累计收到
1
条评论
首页
栏目
默认分类
每日天文图
页面
关于人生天地间
搜索到
49
篇与
的结果
2023-08-27
2023年08月27日:三个星系与一颗彗星-(Three Galaxies and a Comet)
2023年08月27日:三个星系与一颗彗星-(Three Galaxies and a Comet)--原图下载{mtitle title="三个星系与一颗彗星"/}Credit & Copyright: MiloslavDruckmuller (Brno University of Technology)说明: 在这幅壮丽的影像里,沿着斜贯过夜空的南天银河分布之弥漫星光和暗星云,悬在地平线上方。这幅迷人拼接影像的张角宽达100度,前景则是位于阿根廷.巴塔哥尼亚的崎岖原野。影像呈现我们身为银河系圈内人所见的光景之外,也记录了我们作为圈外人所看到的大和小麦哲伦星系,这二个形状不规则的银河伴星系之身影。此外,这张影像也捕捉到曳着宽广彗尾和明亮彗发的2007年大彗星──麦克诺彗星。{lamp/}原文:{mtitle title="Three Galaxies and a Comet"/}Credit & Copyright: MiloslavDruckmuller (Brno University of Technology)Explanation: Diffuse starlight and dark nebulaealong the southernMilky Way arc over the horizon and sprawl diagonally through thisgorgeous nightscape.The breath-taking mosaic spans a wide100 degrees, with the ruggedterrain of the Patagonia, Argentina region in the foreground.Along with the insider's view of our own galaxy, the imagefeatures our outside perspective on two irregular satellite galaxies -the Large andSmall Magellanic Clouds.The scene also captures thebroad tailand bright coma of Comet McNaught, theGreat Comet of 2007.
2023年08月27日
0 阅读
0 评论
0 点赞
2023-01-13
2023年01月13日:年轻星团NGC 346-(Young Star Cluster NGC 346)
2023年01月13日:年轻星团NGC 346-(Young Star Cluster NGC 346)--原图下载{mtitle title="年轻星团NGC 346"/}Image Credit:Science -NASA,ESA,CSA,Olivia C. Jones (UK ATC), Guido De Marchi (ESTEC), Margaret Meixner (USRA)Processing - Alyssa Pagan (STScI), Nolan Habel (USRA),Laura Lenkić (USRA), Laurie E. U. Chu (NASA Ames)说明: 小麦哲伦星系里质量最大的年轻星团是NGC 346,而它位在距离有210,000光年的这个小伴星系最大的恒星形成区之内。想当然耳,NGC 346内的大质量恒星寿命极短,但非常活跃。它们的恒星风和辐射,雕塑出该区尘埃分子云的边缘,并触发了其内的恒星形成活动。因此,这个恒星形成区看似拥有大量的婴儿期恒星。而散布在此星团各处的这些婴儿期恒星之年龄只有3到500万年,其核心的氢融合尚末点燃。这张精采的NGC 346红外光影像,是由韦伯太空望远镜的近红外相机所拍摄。被大质量恒星的高能星光电离的原子氢所发出之辐射,以及恒星形成分子云内的分子氢和尘埃,分别以粉红及橙色系来呈现。以小麦哲伦星系所在的距离来换算,这幅以年轻恒星形成区为主题的清晰韦伯影像涵盖了240光年的区域。{lamp/}原文:{mtitle title="Young Star Cluster NGC 346"/}Image Credit:Science -NASA,ESA,CSA,Olivia C. Jones (UK ATC), Guido De Marchi (ESTEC), Margaret Meixner (USRA)Processing - Alyssa Pagan (STScI), Nolan Habel (USRA),Laura Lenkić (USRA), Laurie E. U. Chu (NASA Ames)Explanation: The most massive young star cluster in theSmall Magellanic Cloud is NGC 346,embedded in our small satellite galaxy's largest star forming regionsome 210,000 light-years distant.Of course themassive stars of NGC 346 are short lived, but veryenergetic. Their winds and radiationsculpt the edgesof the region's dusty molecular cloud triggeringstar-formation within.The star forming region also appears tocontain a large population of infant stars.A mere 3 to 5 million years old and not yetburning hydrogenin their cores, theinfant starsare strewn about the embedded star cluster.This spectacular infrared viewof NGC 346 isfrom the James Webb Space Telescope'sNIRcam.Emission from atomic hydrogen ionized by the massive stars' energeticradiation as well as molecular hydrogen and dustin the star-forming molecular cloud is detailed in pink and orange hues.Webb's sharp imageof the young star-forming regionspans 240 light-years at the distance of the Small Magellanic Cloud.
2023年01月13日
0 阅读
0 评论
0 点赞
2022-05-12
2022年05月12日:NGC 346的年轻恆星-(Young Stars of NGC 346)
2022年05月12日:NGC 346的年轻恆星-(Young Stars of NGC 346)--原图下载{mtitle title="NGC 346的年轻恆星"/}Image Credit: NASA,ESA- acknowledgement:Antonella Nota (ESA/STScI)et al.,说明: NGC 346的大质量恒星很短命,但会发出非常强烈的辐射。 距离我们约210,000光年远的这个星团,位在小麦哲伦星系最大的恒星形成区之内。它们的恒星风和辐射,在云气和尘埃云内清出一个星际穴洞、触发恒星形成.并雕塑出此区域的緻密内缘。这个编号为N66的恒星形成区,拥有大量婴儿期恒星。这些年龄只有3到5百万年、核心尚未触发氢融合的婴儿期恒星,散布在NGC 346各处。在这幅假色的哈伯太空望远镜影像里,可见光和近红外光分别以蓝和绿来上色,而氢原子所发出的光则为红色。{lamp/}原文:{mtitle title="Young Stars of NGC 346"/}Image Credit: NASA,ESA- acknowledgement:Antonella Nota (ESA/STScI)et al.,Explanation: The massive stars of NGC 346are short lived, but veryenergetic.The star cluster is embedded inthe largest star forming region in theSmall Magellanic Cloud,some 210,000 light-years distant.Their winds and radiation sweep out an interstellarcavern in the gas and dust cloud about 200 light-years across,triggering star formation and sculptingthe region's dense inner edge.Cataloged as N66, the star forming region also appears tocontain a large population of infant stars.A mere 3 to 5 million years old and not yetburning hydrogenin their cores, theinfant starsare strewn about the embedded star cluster.In this false-colorHubble Space Telescope image,visible and near-infrared light are seen as blue and green,while light from atomic hydrogen emission is red.
2022年05月12日
0 阅读
0 评论
0 点赞
2022-03-15
2022年03月15日:前往恆星的道路-(A Road to the Stars)
[2022年03月15日:前往恆星的道路-(A Road to the Stars)--原图下载](https://apod.nasa.gov/apod/image/2203/Road2Stars_EsoHoralek_4000.jpg"onMouseOver="if (document.images)document.imagename1.src='image/2203/Road2Stars_EsoHoralek_1080_annotated.jpg';"onMouseOut="if (document.images)document.imagename1.src='image/2203/Road2Stars_EsoHoralek_1080.jpg';){mtitle title="前往恆星的道路"/}Image Credit: ESO, Petr Horálek(ESO Photo Ambassador,Inst. of Physics in Opava)说明: 这张图呈现一条通往恒星、风景非常优美的道路。在这条通往智利.拉西拉天文台的道路上,欧南天文台的3.6 米口径望远镜就在前方。左侧则是规划中的BlackGEM(黑宝石)望远镜的一些具有未来感之支撑结构,这个 光学 望远镜阵列,将协助LIGO和其他侦测器,进行它们侦测到的重力波光学对应天体的定位工作 。不过影像里还有非常多的亮点,例如:照亮右方的夜空的泛红气辉,而我们银河系的中央盘面斜贯过影像中心,影像中心的银河盘面上方有木星,而在3.6米望远镜圆顶上方可见到土星。我们银河系最大两个伴星系:大麦哲伦星系和小麦哲伦星系,位在影像的右缘附近。这幅全景主题影像,是由摄于2019年6月30日的多张15秒长曝光照片组合而成的。两天之后, 拉西拉天文台迎来了罕见的日全食。{lamp/}原文:{mtitle title="A Road to the Stars"/}Image Credit: ESO, Petr Horálek(ESO Photo Ambassador,Inst. of Physics in Opava)Explanation: Pictured -- a very scenic road to the stars. The road approaches La Silla Observatory in Chile, with the ESO's 3.6-meter telescope just up ahead.To the left are some futuristic-looking support structures for the planned BlackGEM telescopes, an array of optical telescopes that will help locate optical counterparts to gravitational waves detections by LIGO and other detectors. But there is much more.Red airglow illuminates the night sky on the right, while the central band of our Milky Way Galaxy slants across the image center.Jupiter can be seen just above the band near the image center, while Saturn is visible just above the 3.6-meter telescope dome.The two largest satellite galaxies of our Milky Way Galaxy, the LMC and SMC, are seen on the far right.The featured image panorama was built up from multiple 15-second exposures that were captured on 2019 June 30. Two days later, La Silla experienced a rare total eclipse of the Sun.
2022年03月15日
0 阅读
0 评论
0 点赞
2022-03-10
2022年03月10日:球状星团杜鹃47-(Globular Star Cluster 47 Tuc)
2022年03月10日:球状星团杜鹃47-(Globular Star Cluster 47 Tuc)--原图下载{mtitle title="球状星团杜鹃47"/}Image Credit &Copyright:Bernard Miller说明: 球状星团杜鹃47(47 Tuc)是南天的珍宝。又名为NGC 104的这个星团,和其他200多个球状星团在银河系的银晕内漫游。从地球看出去,杜鹃47是亮度排行第二的球状星团,只略暗于半人马座的奥米茄星团,用肉眼轻易可在杜鹃座的小麦哲伦星系附近,见到这个远在13,000光年之外的天体。在高恒星密度的球状星团杜鹃47之内,数十万颗成员恒星,拥挤在宽约120光年的体积内,而在其内,有颗恒星拥有现知绕行黑洞的最密近轨道。此外,在这幅清晰的望远镜影像里,星团边缘轻易可办的泛黄恒星是红巨星。{lamp/}原文:{mtitle title="Globular Star Cluster 47 Tuc"/}Image Credit &Copyright:Bernard MillerExplanation: Globular star cluster 47 Tucanae is a jewel of the southern sky.Alsoknown as NGC 104,it roams the halo of our Milky Way Galaxy along with some 200 otherglobular star clusters.The second brightest globular cluster (afterOmega Centauri)as seen from planet Earth, 47 Tuc lies about 13,000 light-years away.It can be spotted with the naked-eye close on the sky to theSmall Magellanic Cloudin the constellation ofthe Toucan.The dense cluster is made up of hundreds of thousandsof stars in avolume only about 120 light-years across.Red giant starson the outskirts of the cluster are easy to pick out as yellowish stars inthis sharp telescopic portrait.Tightly packed globular cluster 47 Tuc is also home toa star with the closest knownorbit around a black hole.
2022年03月10日
0 阅读
0 评论
0 点赞
2021-12-02
2021年12月02日:NGC 6822: 巴纳德星系-(NGC 6822: Barnard's Galaxy)
2021年12月02日:NGC 6822: 巴纳德星系-(NGC 6822: Barnard's Galaxy)--原图下载{mtitle title="NGC 6822: 巴纳德星系"/}Image Credit &Copyright:Dietmar Hager,Eric Benson说明: 拥有美丽对称螺旋臂、上头镶着明亮年轻蓝色星团的宏伟螺旋星系,看似独享所有的风采和注意。其实小星系也会形成恒星,例证之一为邻近的巴纳德星系(NGC 6822)。位在人马座方向富星场的后方,离我们约只有150万光年远的NGC 6822,是本星系群的成员之一。NGC 6822的跨幅约有7,000光年,是个形似小麦哲伦星系的不规则矮星系。在这幅彩色深空组合影像里,带芒的较明亮天体,是近在银河系之内的前景恒星。而位于它们后方的巴纳德星系,其内看似满布着年轻的泛蓝恒星,并缀着散发氢粉红辉光的恒星形成区。{lamp/}原文:{mtitle title="NGC 6822: Barnard's Galaxy"/}Image Credit &Copyright:Dietmar Hager,Eric BensonExplanation: Grand spiral galaxiesoften seem to get all the glory, flaunting theiryoung, bright, blue star clusters in beautiful, symmetric spiral arms.But small galaxies form stars too, like nearby NGC 6822, also known asBarnard'sGalaxy.Beyond the rich starfields in the constellation Sagittarius,NGC 6822 is a mere 1.5 million light-years away, a member of ourLocal Groupof galaxies.A dwarf irregular galaxy similar to theSmall Magellanic Cloud,NGC 6822 is about 7,000 light-years across.Brighter foreground stars in our Milky Way have a spiky appearance.Behind them,Barnard's Galaxy is seen to be filled with young blue stars and mottledwith the telltale pinkish hydrogen glowof star forming regions in this deepcolor composite image.
2021年12月02日
0 阅读
0 评论
0 点赞
1
2
...
9