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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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2023-06-19
2023年06月19日:礁湖星云喧嚣的中心-(The Busy Center of the Lagoon Nebula)
2023年06月19日:礁湖星云喧嚣的中心-(The Busy Center of the Lagoon Nebula)--原图下载{mtitle title="礁湖星云喧嚣的中心"/}Image Credit: NASA, ESA, Hubble; Processing: Francisco Javier Pobes Serrano说明: 礁湖星云的中心正在进行剧烈壮观的造星活动。在影像的中心附近,至少可以找到两根长约半光年、由极强烈恒星风和高能量星光吹袭而成的漏斗形云柱。而附近极端明亮的恒星Herschel 36,则照亮了整个区域。此外,还可见到红化或遮掩其他炽热年轻恒星的厚重尘埃云墙。随着这些恒星的能量流进冰冷的尘埃和云气,横跨在毗邻区域巨大温差所形成的剪向风,可能就是造就这些漏斗云柱的主因。上面这张宽约15光年的影像,是由哈伯太空望远镜所拍摄的6色照片组合而成。编录号为M8的礁湖星云,位在黄道上的人马 座方向,离我们约5,000光年远之处。{lamp/}原文:{mtitle title="The Busy Center of the Lagoon Nebula"/}Image Credit: NASA, ESA, Hubble; Processing: Francisco Javier Pobes SerranoExplanation: The center of the Lagoon Nebula is a whirlwind of spectacular star formation.Visible near the image center, at least two long funnel-shaped clouds, each roughly half a light-year long, have been formed by extreme stellar winds and intense energetic starlight. A tremendously bright nearby star, Herschel 36, lights the area. Vast walls of dust hide and redden other hot young stars. As energy from these stars pours into the cool dust and gas, large temperature differences in adjoining regions can be created generating shearing winds which may cause the funnels. This picture, spanning about 15 light years, combines images taken in four colors by the orbiting Hubble Space Telescope. The Lagoon Nebula, also known as M8, lies about 5000 light years distant toward the constellation of the Archer (Sagittarius).
2023年06月19日
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2022-08-08
2022年08月08日:移除恆星后的礁湖星云-(The Lagoon Nebula without Stars)
2022年08月08日:移除恆星后的礁湖星云-(The Lagoon Nebula without Stars)--原图下载{mtitle title="移除恆星后的礁湖星云"/}Image Credit & Copyright: Sameer Dhar说明: 明亮的星际云气脊和黝黑的尘埃云,交织在礁湖星云狂乱的内部深处。这个又称为M8的明亮恒星形成区,离我们约有5,000光年远。纵然很远,然而以望远镜巡礼我们银河系中心的人马座之时,它仍是一个热门的目标。在这幅呈现宽约100光年的礁湖星云中心区之深空影像里,电离化氢原子和逸失的电子复合时所发出的特徵性红光辐射,是最主要的色泽。此外,在一颗大质量年轻恒星的高能辐射和强烈恒星风之电离化和雕塑下,形成了影像中右方的沙漏状云气。 在这幅主题影像里,数百万年前刚形成于星云内的疏散星团NGC 6530之亮星,已运用数位技术加以移除。{lamp/}原文:{mtitle title="The Lagoon Nebula without Stars"/}Image Credit & Copyright: Sameer DharExplanation: Ridges of glowing interstellar gas anddark dust clouds inhabit theturbulent, cosmic depths of the Lagoon Nebula.Also known as M8, the bright star forming region is about5,000 light-years distant.But it still makes for a popular stop ontelescopic tours ofthe constellation Sagittarius, toward the center of our Milky Way Galaxy.Dominated by the telltale red emission of ionized hydrogen atomsrecombining with stripped electrons,this stunning, deep view of the Lagoon is nearly100 light-years across. Right of center, the bright, compact, hourglassshape is gas ionized and sculpted by energetic radiationand extreme stellar winds from amassive young star.In fact, although digitally removed from the featured image,the many bright stars of open cluster NGC 6530drift within the nebula,just formed inthe Lagoon several million years ago.
2022年08月08日
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2022-05-25
2022年05月25日:礁湖星云活跃的中心区-(The Lively Center of the Lagoon Nebula)
2022年05月25日:礁湖星云活跃的中心区-(The Lively Center of the Lagoon Nebula)--原图下载{mtitle title="礁湖星云活跃的中心区"/}Image Credit: NASA, ESA, Hubble; Processing & Copyright: Mehmet Hakan Özsaraç说明: 礁湖星云的中心正在进行剧烈 壮观的造星活动。在影像的中心附近,至少可以找到两根长达半光年,由超强恒星风和高能星光吹袭而成的漏斗形云气柱。而附近极端明亮的恒星Herschel 36,则照亮了整个区域。此外,还可见到红化与遮掩其他炽热年轻恒星的厚重尘埃云墙。随着这些恒星的能量流进冰冷的尘埃和云气,毗邻区巨大温差所形成的剪向风,可能是造成这些漏斗云柱的主因。上面这张涵盖了10光年天区的影像,是由哈伯太空望远镜所拍摄的六波段照片组合而成。编录号为M8的礁湖星云,位在黄道上的人马 座方向,离我们约有5,000光年远。{lamp/}原文:{mtitle title="The Lively Center of the Lagoon Nebula"/}Image Credit: NASA, ESA, Hubble; Processing & Copyright: Mehmet Hakan ÖzsaraçExplanation: The center of the Lagoon Nebula is a whirlwind of spectacular star formation.Visible near the image center, at least two long funnel-shaped clouds, each roughly half a light-year long, have been formed by extreme stellar winds and intense energetic starlight. A tremendously bright nearby star, Herschel 36, lights the area. Vast walls of dust hide and redden other hot young stars. As energy from these stars pours into the cool dust and gas, large temperature differences in adjoining regions can be created generating shearing winds which may cause the funnels. This picture, spanning about 10 light years, combines images taken in six colors by the orbiting Hubble Space Telescope. The Lagoon Nebula, also known as M8, lies about 5000 light years distant toward the constellation of the Archer (Sagittarius).
2022年05月25日
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2021-04-26
2021年04月26日:人马三重星云-(A Sagittarius Triplet)
2021年04月26日:人马三重星云-(A Sagittarius Triplet)--原图下载{mtitle title="人马三重星云"/}Image Credit &Copyright:Gabriel Rodrigues Santos说明: 用望远镜巡礼人马座和恒星群集的银河中心之时,这三个明亮星云经常是目光会聚的天体。其实远在十八世纪时,梅西叶就编录了其中的两个星云,它们分别是影像中右下方的大星云M8和顶缘附近的美丽M20。第三个发射星云是M8左方的NGC 6559,二者由一道黝黑尘埃带所分隔。这三个星云,都是距离在5千光年左右的恒星诞生区。跨幅超过100光年的庞大M8,亦名为礁湖星云,而M20常见的暱称是三叶星云。影像中,明亮氢气云发出的红光,是这些发射星云最主宰性的色泽,而三叶星云内高对比的泛蓝区域,则来自被尘埃所反射的星光。这片宽广的星际视野,横跨约4度(8个满月宽度)的天区。{lamp/}原文:{mtitle title="A Sagittarius Triplet"/}Image Credit &Copyright:Gabriel Rodrigues SantosExplanation: These three bright nebulae are often featured on telescopic tours of theconstellation Sagittarius and the crowded starfields ofthe central Milky Way.In fact, 18th century cosmic touristCharles Messiercataloged two of them; M8,the large nebula below and right of center,and colorful M20near the top of the frame.The third emission region includesNGC 6559, left of M8 andseparated from the larger nebula by a dark dust lane.All three are stellar nurseries aboutfive thousand light-years or so distant.Over a hundred light-years across the expansive M8is also known as the Lagoon Nebula.M20's popular moniker is the Trifid.Glowing hydrogen gas creates the dominant red color of theemission nebulae.But for striking contrast, blue hues in theTrifid are due to dust reflected starlight.Thebroad interstellarscapespans almost 4 degrees or 8 full moons on the sky.
2021年04月26日
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2020-06-01
2020年06月01日:礁湖星云活跃的中心-(The Lively Center of the Lagoon Nebula)
2020年06月01日:礁湖星云活跃的中心-(The Lively Center of the Lagoon Nebula)--原图下载{mtitle title="礁湖星云活跃的中心"/}Image Credit: NASA, ESA,Hubble; Processing & Copyright: Diego Gravinese说明: 礁湖星云的中心正在进行剧烈壮观的造星活动。在影像的中心附近,至少可以找到两根长达半光年、由超强恒星风和高能星光吹袭而成的漏斗形云气柱。而附近极端明亮的恒星Hershel 36,则照亮了整个区域。此外,还可见到红化或遮掩其他炽热年轻恒星的厚重尘埃云墙。随着这些恒星的能量流进冰冷的尘埃和云气,横跨在毗邻区域巨大温差所形成的剪向风,可能就是造成这些漏斗云柱的主因。上面这张涵盖了15光年天区的影像,是由哈伯太空望远镜所拍摄的二色照片组合而成。编录号为M8的礁湖星云,位在黄道上的人马 座方向,离我们约有5,000光年远。{lamp/}原文:{mtitle title="The Lively Center of the Lagoon Nebula"/}Image Credit: NASA, ESA,Hubble; Processing & Copyright: Diego GravineseExplanation: The center of the Lagoon Nebula is a whirlwind of spectacular star formation.Visible near the image center, at least two long funnel-shaped clouds, each roughly half a light-year long, have been formed by extreme stellar winds and intense energetic starlight. A tremendously bright nearby star, Herschel 36, lights the area. Vast walls of dust hide and redden other hot young stars. As energy from these stars pours into the cool dust and gas, large temperature differences in adjoining regions can be created generating shearing winds which may cause the funnels. This picture, spanning about 15 light years, features two colors detected by the orbiting Hubble Space Telescope. The Lagoon Nebula, also known as M8, lies about 5000 light years distant toward the constellation of the Archer Sagittarius.
2020年06月01日
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2019-11-04
2019年11月04日:礁湖星云的中心-(Near the Center of the Lagoon Nebula)
2019年11月04日:礁湖星云的中心-(Near the Center of the Lagoon Nebula)--原图下载{mtitle title="礁湖星云的中心"/}Image Credit & Copyright: Zhuoqun Wu,Chilescope说明: 在礁湖星云里,恒星正和云气与尘埃进行争战,因此让摄影者得以拍到精彩的照片。亦名为M8的这团美丽星云,位在人马 座内,是一个不用借助双筒望远镜肉眼也可见的星云。恒星形成时的高能过程,除了造就了缤纷多彩的色泽,也造成各种紊乱的景观。例如,在上面这张影像左方,云气之所以发出辉光,是因为高能星光冲撞星际氢气及微量的硫和氧气所致。出现在M8各处的黝黑丝状尘埃,则是形成于低温巨星的大气或是超新星爆炸的碎片。我们现在看到来自M8的星光,远在5,000年前就出发了。光要越过影像中这片M8的区域,得用上50年。{lamp/}原文:{mtitle title="Near the Center of the Lagoon Nebula"/}Image Credit & Copyright: Zhuoqun Wu,ChilescopeExplanation: Stars are battling gas and dust in the Lagoon Nebulabut the photographers are winning.Also known as M8,this photogenic nebula is visibleeven without binoculars towards the constellation of the Archer (Sagittarius).The energetic processes ofstar formation create notonly the colors but the chaos.The glowing gas results from high-energy starlight striking interstellarhydrogen gas and trace amounts of sulfur, and oxygen gases.The darkdustfilaments that laceM8 were created inthe atmospheres of coolgiant stars and in thedebris fromsupernovae explosions.The light from M8 we see today left about5,000 years ago.Light takes about 50 years to cross this section ofM8.
2019年11月04日
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