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)
39 阅读
2
欢迎来到人生天地间
29 阅读
3
2017年11月29日:M42:猎户座大星云-(M42: The Great Orion Nebula)
26 阅读
4
2017年08月06日:银河与炸裂的流星-(Milky Way and Exploding Meteor)
15 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)
12 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
10,554
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
9
篇与
的结果
2023-11-22
2023年11月22日:IC 342:尘豹座的隐藏星系-(IC 342: Hidden Galaxy in Camelopardalis)
2023年11月22日:IC 342:尘豹座的隐藏星系-(IC 342: Hidden Galaxy in Camelopardalis)--原图下载{mtitle title="IC 342:尘豹座的隐藏星系"/}Image Credit &Copyright: Steve Cannistra说明: 大小和我们附近明亮大螺旋星系相当的IC 342,位于北天具有长长脖子的鹿豹座之内,距离我们只有1千万光年远。IC 342是个庞大的宇宙岛,所以本来应是我们夜空中一个很吸睛的星系,不过受到银河系盘面的恒星、云气和尘埃之遮掩,只能隐约窥其身影。虽然IC 342发出的光因受到居间的宇宙云之消光而变暗,然而这幅清晰的望远镜影像,还是能呈现这个星系的尘埃云、年轻恒星团、以及从星系核伸出的长螺旋臂上之粉红恒星诞生区。IC 342最近可能刚发生过猛爆性的恒星诞生活动,此外它也够邻近,因此会透过重力影响本星系群和我们银河系的演化。{lamp/}原文:{mtitle title="IC 342: Hidden Galaxy in Camelopardalis"/}Image Credit &Copyright: Steve CannistraExplanation: Similarin size to large, bright spiral galaxies in our neighborhood,IC 342is a mere 10 million light-yearsdistantin the long-necked, northern constellationCamelopardalis.A sprawling island universe,IC 342 would otherwise be a prominent galaxy in our night sky,but it is hidden from clear view and onlyglimpsed through the veil of stars, gas and dust cloudsalong the plane of our own Milky Way galaxy.Even though IC 342's light is dimmed and reddened by interveningcosmic clouds,thissharp telescopic imagetraces the galaxy's own obscuring dust, young star clusters, andglowing star forming regions along spiral arms that wind far fromthe galaxy's core.IC 342 has undergone a recent burst ofstar formationactivity and is close enough to have gravitationally influencedthe evolution of thelocal groupof galaxies and the Milky Way.
2023年11月22日
0 阅读
0 评论
0 点赞
2022-09-08
2022年09月08日:北美洲星云与鹈鹕星云-(North America and the Pelican)
2022年09月08日:北美洲星云与鹈鹕星云-(North America and the Pelican)--原图下载{mtitle title="北美洲星云与鹈鹕星云"/}Image Credit &Copyright: Frank Sackenheim说明: 美丽地球的粉丝,可能不难认出这些宇宙云的轮廓。在影像左方,边缘镶着黝黑不透光尘埃带的明亮辐射区,看似有大陆块的外观,因此这团编录号为NGC 7000的发射星云,拥有北美洲星云的暱称。近在北美洲星云右方的东岸外头,可见到IC 5070,其轮廓则为它博得鹈鹕星云的称号。这二个距离约1,500光年的明亮星云,同是一个庞大、几乎和猎户大星云一样邻近的恒星形成区複合体之一部分。以此个距离来换算,这张3度跨幅的广角影像,宽度大约有80光年。这张精心规划的宇宙影像,组合了数幅窄波段影像数据,以突显明亮的电离前沿和原子氢及氧气发出的特徵辐射。在夜空巡礼天鹅座时,用双筒望远镜即可在天鹅座亮星天津四的东北方看到这些星云。{lamp/}原文:{mtitle title="North America and the Pelican"/}Image Credit &Copyright: Frank SackenheimExplanation: Fans of our fair planetmight recognize the outlines of thesecosmicclouds.On the left, bright emission outlined by dark, obscuring dust lanesseems to trace a continental shape, lending the popular nameNorth America Nebulato the emission region cataloged as NGC 7000.To the right, just off the North America Nebula's east coast,is IC 5070, whose avianprofile suggeststhePelican Nebula. The two bright nebulae are about 1,500 light-years away,part of the samelarge and complexstar forming region, almost as nearby as thebetter-known Orion Nebula.At that distance, the 3 degree wide field of view would span80 light-years.This careful cosmic portraituses narrowband images combined to highlight the brightionization frontsand the characteristic glow from atomic hydrogen, and oxygengas.These nebulae can be seen with binoculars from a dark location. Look northeast of bright starDeneb in Cygnus the Swan, soaring high in the northern summernight sky.
2022年09月08日
0 阅读
0 评论
0 点赞
2022-02-11
2022年02月11日:IC 342:隐藏的星系-(IC 342: The Hidden Galaxy in Camelopardalis)
2022年02月11日:IC 342:隐藏的星系-(IC 342: The Hidden Galaxy in Camelopardalis)--原图下载{mtitle title="IC 342:隐藏的星系"/}Image Credit &Copyright: Daniel Feller说明: 大小和我们附近的明亮大螺旋星系相当的IC 342,位于有长长脖子的鹿豹座之内,距离我们只有1千万光年远。IC 342是个庞大的宇宙岛,所以本来应是我们夜空中一个很吸睛的星系,但因为受到银河系盘面的恒星、云气和尘埃之遮掩,只能隐约窥其芳蹤。虽然IC 342发出的光因受到居间的宇宙云之消光而变暗,这幅清晰的望远镜影像,还是能呈现这个星系的尘埃云、年轻恒星团、以及从星系核伸展而出的长长螺旋臂上之粉红恒星诞生区。IC 342最近可能刚发生一次猛爆的恒星诞生活动,此外它也够近,所以在重力上对本星系群和我们银河系的演化都有影响。{lamp/}原文:{mtitle title="IC 342: The Hidden Galaxy in Camelopardalis"/}Image Credit &Copyright: Daniel FellerExplanation: Similarin size to large, bright spiral galaxies in our neighborhood,IC 342is a mere 10 million light-yearsdistant in the long-necked,northern constellation Camelopardalis.A sprawling island universe,IC 342 would otherwise be a prominent galaxy in our night sky,but it is hidden from clear view and onlyglimpsed through the veil of stars, gas and dust cloudsalong the plane of our own Milky Way galaxy.Even though IC 342's light is dimmed and reddened by interveningcosmic clouds,thissharptelescopic image traces the galaxy's own obscuring dust,young star clusters, and glowing pink star forming regions along spiralarms that wind far fromthe galaxy'score.IC 342 may have undergone a recent burst ofstar formation activity and isclose enough to have gravitationallyinfluenced the evolution of thelocal groupof galaxies and the Milky Way.
2022年02月11日
0 阅读
0 评论
0 点赞
2021-09-16
2021年09月16日:北美洲与鹈鹕-(North America and the Pelican)
2021年09月16日:北美洲与鹈鹕-(North America and the Pelican)--原图下载{mtitle title="北美洲与鹈鹕"/}Image Credit &Copyright:Andrew Klinger说明: 美丽地球的粉丝,可能不难认出这些宇宙云的轮廓。在影像左方,边缘镶着黝黑不透光尘埃带的明亮辐射区,看似有地球大陆的外观,因此这团编录号为NGC 7000的发射星云,拥有北美洲星云的暱称。近在北美洲星云右方的东岸外头,可见到IC 5070,其外观则为它博得鹈鹕星云的称号。这二个约1,500光年远的明亮星云,是一个庞大、几乎和猎户座大星云一样邻近的恒星形成区複合体的一部分。以这个距离来换算,这张3度跨幅的广角影像,宽约有150光年。这张精心规划的宇宙影像,组合了数张窄波段影像照片,以突显明亮的电离前沿和原子氢、硫、和氧发出的特徵辐射。在有幽暗天空的地方巡礼天鹅座时,用双筒望远镜即可在亮星天津四的东北方看到这些星云。{lamp/}原文:{mtitle title="North America and the Pelican"/}Image Credit &Copyright:Andrew KlingerExplanation: Fans of our fair planetmight recognize the outlines of thesecosmic clouds.On the left, bright emission outlined by dark, obscuring dust lanesseems to trace a continental shape, lending the popular nameNorth America Nebulato the emission region cataloged as NGC 7000.To the right, just off the North America Nebula's east coast,is IC 5070, whose avianprofile suggeststhePelican Nebula. The two bright nebulae are about 1,500 light-years away,part of the samelarge and complexstar forming region, almost as nearby as thebetter-known Orion Nebula.At that distance, the 3 degree wide field of view would span80 light-years.This careful cosmic portraitusesnarrow bandimages combined to highlight the brightionization frontsand the characteristic glow from atomic hydrogen, sulfur, and oxygen gas.These nebulae can be seen with binoculars from a dark location. Look northeast of bright starDeneb in the constellation Cygnus the Swan.
2021年09月16日
0 阅读
0 评论
0 点赞
2018-11-06
2018年11月06日:NGC 1499: 加州星云-(NGC 1499: The California Nebula)
2018年11月06日:NGC 1499: 加州星云-(NGC 1499: The California Nebula)--原图下载{mtitle title="NGC 1499: 加州星云"/}Image Credit & Copyright: Bray Falls说明: 就连太空也有加州。在银河系猎户臂内飘流的这朵宇宙云,形状酷似美国西岸的加州,故有加州星云的雅号。我们的太阳也位于银河系的猎户臂内,与加州星云相距约有1,500光年。这团亦名为NGC 1499的经典发射星云,长度约有100光年。在这张主题影像里,加州星云最明显的辉光,是来自受到高能星光电离的氢原子、在与失去的电子复合后发出的特徵红光。发出这些高能量星光并造成大部分云气电离的恒星,很可能是位在星云右缘之外,名为捲舌三(Xi Persei; Menkib)的明亮炽热泛蓝恒星。加州星云是天文摄影者的热门标的,用大视野望远镜在幽暗天空中的英仙座方向,就能找到离昴宿星团不远的这团星云。{lamp/}原文:{mtitle title="NGC 1499: The California Nebula"/}Image Credit & Copyright: Bray FallsExplanation: There's even a California in space. Drifting through the Orion Arm of the spiral Milky Way Galaxy,this cosmic cloudby chance echoes the outline of California on the west coast of the United States.Our own Sun also lies within the Milky Way'sOrionArm, only about 1,500 light-years from the California Nebula.Also known as NGC 1499, the classic emission nebula is around 100 light-years long.On the featured image, the most prominent glow of the California Nebula is the red light characteristic of hydrogen atoms recombining with longlost electrons, stripped away (ionized) by energetic starlight.The star most likely providing the energetic starlight that ionizes much of the nebular gas is the bright, hot, bluish Xi Perseijust to the right of the nebula. A regular target for astrophotographers, the California Nebula can be spotted with a wide-field telescope under a dark skytoward the constellation of Perseus, not far from the Pleiades.
2018年11月06日
0 阅读
0 评论
0 点赞
2018-03-16
2018年03月16日:海鸥与鸭子-(The Seagull and the Duck)
2018年03月16日:海鸥与鸭子-(The Seagull and the Duck)--原图下载{mtitle title="海鸥与鸭子"/}Image Credit &Copyright: RaulVillaverde Fraile说明: 这二团看似海鸥与鸭子的星云,并非是唯二会让我们联想到飞行的宇宙云。不过,在这片涵盖地球夜空的大犬座天区、接近7度的辽阔宇宙视野里,它们正在展翅高飞。宽广的海鸥星云(中上方),是由二个各拥有编录号的大型发射星云所组成。较明亮的NGC 2327构成头部,较弥漫的IC 2177则是翅膀和身躯。以这团星云3,800光年的估计距离来换算,这只海鸥有令人叹为观止的250光年宽翼展。位在影像右下角的鸭子星云较紧实,以它大约15,000光年的距离来估算,跨幅大约只有50光年。编录号为NGC 2359的鸭子星云,是由位在它中心的极大质量炽热恒星之高能恒星风吹袭而成。除此之外,这只鸭子厚实的身躯和侧翼,也为它博得"雷神的头盔"这个较生动且常见的别名。{lamp/}原文:{mtitle title="The Seagull and the Duck"/}Image Credit &Copyright: RaulVillaverde FraileExplanation: Seen as a seagull and a duck, these nebulae arenot the onlycosmic clouds toevoke images of flight.But both are winging their way across this broadcelestial landscape, spanning almost 7 degrees acrossplanet Earth's night skytoward the constellationCanis Major.The expansive Seagull(top center)isitself composed oftwo major catalogedemission nebulae.Brighter NGC 2327 forms the head with the more diffuseIC 2177 as the wings and body.Impressively, the Seagull'swingspan would correspond to about 250 light-years atthe nebula's estimated distance of 3,800 light-years.At the lower right, the Duck appears much more compact andwould span only about 50 light-years given its15,000 light-year distance estimate.Blown by energetic winds from an extremely massive,hot star near its center, the Duck nebula is catalogedas NGC 2359.Of course, the Duck's thick body and winged appendagesalso lend it the slightly more dramatic popular moniker,Thor's Helmet.
2018年03月16日
0 阅读
0 评论
0 点赞
1
2