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
25 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)
10 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
10,536
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
3
篇与
的结果
2021-10-28
2021年10月28日:奎宿九之魂-(Mirach's Ghost)
2021年10月28日:奎宿九之魂-(Mirach's Ghost)--原图下载{mtitle title="奎宿九之魂"/}Image Credit &Copyright:John Chumack说明: 以鬼魂的标准来看,奎宿九之魂其实惊吓度并不高。事实上,奎宿九之魂是个天文学家很熟悉的模糊黯淡星系,它之所以得名,只是恰好出现在亮星奎宿九的视线方向附近而已。在这片星场中心的天体就是奎宿九,它亦名为仙女座β星。离我们大约200光年远的奎宿九,是一颗红巨星,表面温度比太阳低,不过体积远比大阳大,也因此其真实亮度也远大于太阳。在大多数的望远镜影像里,奎宿九炫目的星光和它产生的绕(衍)射星芒,常遮住它附近的天体,也让这个黯淡模糊的星系,看起像是镜筒内反射炫光所产生的鬼影。不过在这幅清晰的影像里,它以弥漫光斑之姿出现奎宿九的右上方。奎宿九之魂的编录号是NGC 404,距离我们大约有一千万光年远。(Mirach's Ghost 奎宿九之魂){lamp/}原文:{mtitle title="Mirach's Ghost"/}Image Credit &Copyright:John ChumackExplanation: As far asghosts go, Mirach's Ghost isn't really thatscary.Mirach's Ghost is just a faint, fuzzy galaxy, well known to astronomers,that happens to be seen nearly along the line-of-sight toMirach,a bright star.Centered in this star field,Mirach is also called Beta Andromedae.About 200 light-years distant, Mirach is a redgiant star, cooler than the Sun butmuch larger and so intrinsically much brighter than ourparent star.In most telescopic views, glare anddiffractionspikes tend to hide things that lie near Mirach and make thefaint, fuzzy galaxylook like a ghostly internal reflection of the almostoverwhelming starlight.Still, appearing inthis sharp imagejust above and to the right of Mirach,Mirach's Ghost is cataloged asgalaxy NGC 404and is estimatedto be some 10 million light-years away.
2021年10月28日
0 阅读
0 评论
0 点赞
2021-09-08
2021年09月08日:仙女大星系方向的深空影像-(The Deep Sky Toward Andromeda)
[2021年09月08日:仙女大星系方向的深空影像-(The Deep Sky Toward Andromeda)--原图下载](https://apod.nasa.gov/apod/image/2109/M31WideField_Ziegenbalg_1400.jpg"onMouseOver="if (document.images)document.imagename1.src='image/2109/M31WideField_Ziegenbalg_960_annotated.jpg';"onMouseOut="if (document.images)document.imagename1.src='image/2109/M31WideField_Ziegenbalg_960.jpg';){mtitle title="仙女大星系方向的深空影像"/}Image Credit & License: Stefan Ziegenbalg说明: 仙女大星系周围有什么天体?在太空远处的仙女大星系(M31),紧邻的区域内有数个小型伴星系,更外围有包括我们银河系在内的本星系群成员。在地球的天空中,近在我们银河系之内的星云,看似环拱在M31的周围,形成类似地球大气的水汽云包覆在月亮周边的景观。只不过,仙女大星系方向的气体云,通常过于昏暗而不得见。上面这张45度跨幅的主题影像,是仙女大星系方向有史以来最长曝光的较大範围影像之一。这幅摄于特定氢气辐射波段的影像,除了无比清晰的呈现这方向昏暗且陌生的星云之外,更捕捉到其他的景观。其中包括影像顶端的三角大星系(M33);它是本星系群第三大的成员,也是人类肉眼所能见到的最遥远天体。在M33的右下方,则有银河系内的亮星奎宿九(Mirach)。这幅摄于德国.普尔斯尼茨镇的影像,是由在2018年至2021年之间所记录的数个长曝光数据组合而成。{lamp/}原文:{mtitle title="The Deep Sky Toward Andromeda"/}Image Credit & License: Stefan ZiegenbalgExplanation: What surrounds the Andromeda galaxy? Out in space, Andromeda (M31) is closely surrounded by several small satellite galaxies, and further out it is part of theLocal Group of Galaxies -- of which our Milky Way galaxy is also a member.On the sky, however, gas clouds local to our Milky Way appear to surround M31 -- not unlike how water clouds in Earth's atmosphere may appear to encompass our Moon. The gas clouds toward Andromeda, however, are usually too faint to see. Enter the featured 45-degree long image -- one of the deeper images yet taken of the broader Andromeda region.This image, sensitive to light specifically emitted by hydrogen gas, shows these faint and unfamiliar clouds in tremendous detail.But the image captures more. At the image top is the Triangulum galaxy (M33), the third largest galaxy in the Local Group and the furthest object that can be seen with the unaided eye. Below M33 is the bright Milky-Way star Mirach.The image is the digital accumulation of several long exposures taken from 2018 to 2021 from Pulsnitz, Germany.
2021年09月08日
37 阅读
0 评论
0 点赞
2017-10-27
2017年10月27日:奎宿九之魂-(Mirach's Ghost)
2017年10月27日:奎宿九之魂-(Mirach's Ghost)--原图下载{mtitle title="奎宿九之魂"/}Image Credit &Copyright:Kent Wood说明: 以鬼魂的标准来看,奎宿九之魂其实并惊吓度不高。事实上,奎宿九之魂是个天文学家很熟悉的模糊黯淡星系,它只是恰好出现在亮星奎宿九的视线方向附近而已。在这张星场影像中央的天体就是奎宿九,它亦名为仙女座β星。离我们大约200光年的奎宿九,是一颗红巨星,表面温度比太阳低,不过体积远比大阳大,也因此其真实亮度也远大于太阳。在大多数的望远镜影像里,奎宿九炫目的星光和它产生的绕(衍)射星芒,常遮掩了它附近的天体,也让这个黯淡模糊的星系,看起像是镜筒内反射炫光所产生的鬼影。在这幅清晰的影像里,它是位在奎宿九左上方的弥漫光斑。奎宿九之魂的编录号是NGC 404,距离我们大约一千万光年远。(Mirach's Ghost 奎宿九之魂){lamp/}原文:{mtitle title="Mirach's Ghost"/}Image Credit &Copyright:Kent WoodExplanation: As far asghosts go, Mirach's Ghost isn't really thatscary.Mirach's Ghost is just a faint, fuzzy galaxy, well known to astronomers,that happens to be seen nearly along the line-of-sight toMirach,a bright star.Centered in this star field,Mirach is also called BetaAndromedae.About 200 light-years distant, Mirach is a redgiant star, cooler than the Sun butmuch larger and so intrinsically much brighter than ourparent star.In most telescopic views, glare anddiffractionspikes tend to hide things that lie near Mirach and make thefaint, fuzzy galaxylook like a ghostly internal reflection of the almostoverwhelming starlight.Still, appearing inthis sharp imagejust above and to the left of Mirach, Mirach's Ghost is cataloged asgalaxy NGC 404and is estimatedto be some 10 million light-years away.
2017年10月27日
0 阅读
0 评论
0 点赞