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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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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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2023-01-10
2023年01月10日:NGC 2264:锥状星云-(NGC 2264: The Cone Nebula)
2023年01月10日:NGC 2264:锥状星云-(NGC 2264: The Cone Nebula)--原图下载{mtitle title="NGC 2264:锥状星云"/}Image Credit & Copyright: Matthew Dieterich说明: 恒星正形成于名为锥状星云的巨大尘埃柱之内。在恒星育婴室里,诞生恒星的云气和尘埃云受到新恒星高能恒星风之雕塑,常会形成许多锥状物、云气柱和壮观且具有流动感的结构。着名的範例之一,是位在明亮银河恒星形成区NGC 2264之内的锥状星云。上面这幅最近由位在智利.El Sauce天文台的50公分口径望远所拍摄的主题影像,总共整合了24小时的曝光数据。位在麒麟座方向约有2,500光年远处的锥状星云,其锥形云柱的伸展长度约有7光年。而位在影像顶端之外的大质量恒星NGC 2264 IRS,可能就是雕塑出锥状星云的恒星风之源头。锥状星云外裹的泛红薄纱,则是来自氢气云所散发的泛红辉光。{lamp/}原文:{mtitle title="NGC 2264: The Cone Nebula"/}Image Credit & Copyright: Matthew DieterichExplanation: Stars are forming in the gigantic dust pillar called the Cone Nebula.Cones, pillars, and majesticflowing shapes abound instellar nurseries where clouds of gas and dust are sculpted by energetic winds from newborn stars.The Cone Nebula, a well-known example, lies within the bright galactic star-forming region NGC 2264.The featured image of the Cone was captured recently combining 24-hours of exposure with a half-meter telescope at the El Sauce Observatory in Chile.Located about 2,500 light-years away toward the constellation of the Unicorn (Monoceros), the Cone Nebula's conical pillar extends about 7 light-years.The massive starNGC 2264 IRS, is the likely source of the wind sculpting the Cone Nebula and lies off the top of the image. The Cone Nebula's reddish veil isproduced by glowing hydrogen gas.
2023年01月10日
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2022-11-14
2022年11月14日:NGC 7380:巫师星云-(NGC 7380: The Wizard Nebula)
2022年11月14日:NGC 7380:巫师星云-(NGC 7380: The Wizard Nebula)--原图下载{mtitle title="NGC 7380:巫师星云"/}Image Credit & Copyright: Ioan Popa说明: 巫师星云具有什么能力呢?它的重力强到可以形成恒星,而它的恒星风与高能辐射也足以创造和消蚀云气柱。这幅主题影像所呈现的巫师星云,环拱在形成中的疏散星团NGC 7380之周围,距离我们约有8000光年远。在视觉上,恒星、云气和尘埃之间的交互作用,造就了它形似虚构的中古世纪巫师之外观。这个活跃、宽约100光年的恒星形成区,视张角大于月亮。用小望远镜指向因埃塞俄比亚国王而得名的仙王座方向,就能找到巫师星云。虽然星云存在的期间可能只有短短的数百万年,然而,其中所形成的部分恒星,可能会比我们太阳还要长寿。{lamp/}原文:{mtitle title="NGC 7380: The Wizard Nebula"/}Image Credit & Copyright: Ioan PopaExplanation: What powers are being wielded in the Wizard Nebula? Gravitation strong enough to form stars, and stellar winds and radiations powerful enough to create and dissolve towers of gas. Located only 8,000 light years away, the Wizard nebula, featured here, surrounds developing open star cluster NGC 7380. Visually, the interplay of stars, gas, and dust has created a shape that appears to some like a fictional medieval sorcerer. The active star forming region spans 100 about light years, making it appear larger than the angular extent of the Moon. The Wizard Nebula can be located with a small telescope toward the constellation of the King of Aethiopia (Cepheus). Although the nebula may last only a few million years, some of the stars being formed may outlive our Sun.
2022年11月14日
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2017-03-15
2017年03月15日:哈伯望远镜的锥状星云-(The Cone Nebula from Hubble)
2017年03月15日:哈伯望远镜的锥状星云-(The Cone Nebula from Hubble)--原图下载{mtitle title="哈伯望远镜的锥状星云"/}Image Credit: Hubble Legacy Archive,NASA,ESA - Processing & Licence: Judy Schmidt说明: 恒星正形成于名为锥状星云的巨大尘埃柱之内。在恒星育婴室里,诞生恒星的云气和尘埃云受到新恒星高能恒星风之吹袭,常会形成许多锥状物、云气柱和壮观且具有流动感的结构。着名的範例之一,是位在明亮银河恒星形成区NGC 2264之内的锥状星云。上面这幅具有前所未见清晰度的锥状星云特写影像,组合自数张哈伯太空望远镜照片。虽然位在麒麟座内、距离我们约有2500光年的锥状星云,长达7光年,不过上面影像所显示锥顶区,大小只有2.5光年左右。在我们所在的银河漩臂上,这个距离只比太阳和近邻南门二间距的一半要多一点而已。1997年哈伯红外线相机所侦测到的大质量恒星NGC 2264 IRS,位在影像顶端之外,它可能就是雕塑椎状星云的恒星风之源头。锥状星云外裹的泛红薄纱,则是正在辐射辉光的氢气云。{lamp/}原文:{mtitle title="The Cone Nebula from Hubble"/}Image Credit: Hubble Legacy Archive,NASA,ESA - Processing & Licence: Judy SchmidtExplanation: Stars are forming in the gigantic dust pillar called the Cone Nebula.Cones, pillars, and majesticflowing shapes abound instellarnurseries where natal clouds of gas and dust are buffeted byenergetic winds from newborn stars.The Cone Nebula, a well-known example, lies within the brightgalactic star-forming region NGC 2264.The Cone was captured in unprecedented detail in this close-up compositeof several observations from the Earth-orbiting Hubble Space Telescope.While the Cone Nebula,about 2,500 light-years awayin Monoceros,is around 7 light-years long,the region pictured heresurrounding the cone's blunted head is a mere 2.5 light-years across.In our neck of the galaxy that distance is just over half way from our Sun to its nearest stellar neighbors in theAlpha Centauri star system.The massive starNGC 2264 IRS, seen by Hubble's infrared camerain 1997, is the likely source of the windsculpting the Cone Nebula and lies off the top of the image.The Cone Nebula's reddish veil isproduced by glowing hydrogen gas.
2017年03月15日
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2016-11-29
2016年11月29日:W5: 灵魂星云之内的恆星诞生-(W5: The Soul of Star Formation)
2016年11月29日:W5: 灵魂星云之内的恆星诞生-(W5: The Soul of Star Formation)--原图下载{mtitle title="W5: 灵魂星云之内的恆星诞生"/}Image Credit: Jos� Jim�nez Priego (Astromet)说明: 恒星形成于何处?很多时候,恒星形成于云气和黝黑尘埃受到狂乱推挤的剧烈环境之中。在上面影像里,位在灵魂星云 (W5)中心的大质量亮星,正在爆炸或在辐射会导致电离的星光和强烈的恒星风。这些向外辐散的光和气体,推走和蒸发周围大部分的气体和尘埃,但留下了顶端有緻密物质结保护的云气柱。不过这些物质结内部,也在形成恒星之中。上面这幅主题影像,呈现了宽达1,000光年、到处都是恒星形成柱的空穴状W5内部。又名为IC 1848的灵魂星云(W5),位在天后座 (衣索比亚之后)方向,离我们约6,500光年远。在数亿年之后,此处可能空留下成团的恒星,接着,这些恒星将星散各奔前程。{lamp/}原文:{mtitle title="W5: The Soul of Star Formation"/}Image Credit: Jos� Jim�nez Priego (Astromet)Explanation: Where do stars form?Many times, stars form in energetic regions where gas and dark dust are pushed around in chaotic mayhem. Pictured, bright massive stars near the center of W5, the Soul Nebula, are exploding and emitting ionizing light and energetic winds.The outward-moving light and gas push away and evaporate much surrounding gas and dust, but leave pillars of gas behind dense protective knots.Inside these knots, though, stars also form. The featured image highlights the inner sanctum of W5, an arena spanning about 1,000 light years that is rich in star forming pillars.The Soul Nebula, also cataloged as IC 1848, lies about 6,500 light years away toward the constellation of the Queen of Aethopia (Cassiopeia).Likely, in few hundred million years, only a cluster of the resulting stars will remain.Then, these stars will drift apart.
2016年11月29日
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2014-05-28
2014年05月28日:哈伯望远镜的椎状星云-(The Cone Nebula from Hubble)
2014年05月28日:哈伯望远镜的椎状星云-(The Cone Nebula from Hubble)--原图下载{mtitle title="哈伯望远镜的椎状星云"/}Image Credit: Hubble Legacy Archive,NASA,ESA - Processing & Licence: Judy Schmidt说明: 恒星正形成于名为椎状星云的巨大尘埃柱之内。在恒星育婴室内,诞生恒星的云气和尘埃云受到新恒星高能恒星风之吹袭,常会形成许多椎状物、云气柱和壮观且具有流动感的结构。着名的範例之一是位在明亮恒星形成区NGC 2264之内的椎状星云 (Cone Nebula)。上面这幅具有前所未见清晰度的特写影像,则是组合自数张哈伯太空望远镜照片。虽然位在麒麟座 (Monoceros)内的椎状星云距离我们有2500光年,长度约为7光年,不过上面影像所显示椎顶区,大小只有2.5光年左右。在我们所在的银河小区,这个距离只比太阳和近邻南门二星间距的一半要多一点而已。1997年哈伯红外线相机所侦测到的大质量恒星NGC 2264 IRS,位在影像顶端之外,它可能就是雕塑椎状星云的恒星风之源头。椎状星云外裹的泛红薄纱,则是正在辐射辉光的氢气云。{lamp/}原文:{mtitle title="The Cone Nebula from Hubble"/}Image Credit: Hubble Legacy Archive,NASA,ESA - Processing & Licence: Judy SchmidtExplanation: Stars are forming in the gigantic dust pillar called the Cone Nebula.Cones, pillars, and majesticflowing shapes abound instellarnurseries where natal clouds of gas and dust are buffeted byenergetic winds from newborn stars.The Cone Nebula, a well-known example, lies within the brightgalactic star-forming region NGC 2264.The Cone was captured in unprecedented detail in this close-up compositeof several observations from the Earth-orbiting Hubble Space Telescope.While the Cone Nebula,about 2,500 light-years awayin Monoceros,is around 7 light-years long,the region pictured heresurrounding the cone's blunted head is a mere 2.5 light-years across.In our neck of the galaxy that distance is just over half wayfrom the Sun to its nearest stellar neighbor, theAlpha Centauri star system.The massive starNGC 2264 IRS, seen by Hubble's infrared camerain 1997, is the likely source of the windsculpting the Cone Nebula and lies off the top of the image.The Cone Nebula's reddish veil isproduced by glowing hydrogen gas.
2014年05月28日
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2013-03-24
2013年03月24日:船底座的尘埃云柱-(Dust Pillar of the Carina Nebula)
2013年03月24日:船底座的尘埃云柱-(Dust Pillar of the Carina Nebula)--原图下载{mtitle title="船底座的尘埃云柱"/}Image Credit: NASA, ESA, N. Smith (U. California, Berkeley) et al., and The Hubble Heritage Team (STScI/AURA)说明: 在这个星际怪物的头部里,有一颗恒星正慢慢地在摧毁它。影像中的这头怪物,实际上只是一支长约一光年的气体和尘埃柱。而里面那颗不断喷发出高能粒子束的恒星,被浓厚的尘埃给遮掩了,因此不得见。而类似的战役,出现在恒星形成区船底座大星云 (NGC 3372)的各个角落。最终,恒星们终将赢得胜利,在接下来的10万年之中,会把孕育它们的云气柱破坏殆尽,并形成一个新的疏散星团 。照片中的那些粉红小点,就是刚从孕育它们的云气柱分离出来的新恒星。上面这幅影像,是2007年哈伯望远镜为船底座大星云所拍的高解析全景影像 的一小部份。在天文专业术语中,这种恒星喷流称为赫比格-哈罗天体 (Herbig-Haro objects)。恒星到底如何产生赫比格--哈罗喷流,仍是科学研究 的课题之一,不过可能和环拱中心星的吸积盘有关。在另一幅大图的底部附近,可见到另一个精采的赫比格--哈罗喷流。{lamp/}原文:{mtitle title="Dust Pillar of the Carina Nebula"/}Image Credit: NASA, ESA, N. Smith (U. California, Berkeley) et al., and The Hubble Heritage Team (STScI/AURA)Explanation: Inside the head of this interstellar monster is a star that is slowly destroying it. The monster, actually an inanimate pillar of gas and dust, measures over a light year in length. The star, not itself visible through the opaque dust, is bursting out partly by ejecting energetic beams of particles.Similar epic battles are being waged all over the star-forming Carina Nebula (NGC 3372). The stars will win in the end, destroying their pillars of creation over the next 100,000 years, and resulting in a new open cluster of stars.The pink dots are newly formed stars that have already been freed from their birth monster. The above image is only a small part of a highly detailed panoramic mosaic of the Carina Nebula taken by the Hubble Space Telescope in 2007. The technical name for the stellar jets are Herbig-Haro objects. How a star creates Herbig-Haro jets is an ongoing topic of research, but it likely involves an accretion disk swirling around a central star.A second impressive Herbig-Haro jet is visible across the bottom of alarger image.
2013年03月24日
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