哑铃星云发出光秀

哑铃星云发出光秀

ByNASA中文

Infrared light surges out from the Dumbbell Nebula, also known as Messier 27, in this Aug. 10, 2011, image from NASA’s Spitzer Space Telescope. This nebula was discovered in 1764 by Charles Messier. It was the first in a class of objects, now known as planetary nebulae, to make it into Messier’s catalog of astronomical objects. Planetary nebulae, historically named for their resemblance to gas-giant planets, are now known to be the remains of stars that once looked a lot like our Sun. Image Credit: NASA/JPL-Caltech/Harvard-Smithsonian CfA 2011年8月10日，NASA斯皮策太空望远镜拍摄的这张照片中显示了哑铃状星云（也被称为梅西耶27）发出的红外光。这个星云是查尔斯·梅西耶于1764年发现。这是目前被称为行星状星云的一类天体中第一个将其纳入星云星团表的天体。行星状星云，历史上因其与气态巨行星相似而得名，现在被认为是曾经看起来非常像我们太阳的恒星的残骸。 影像来源：NASA/JPL-Caltech/Harvard-Smithsonian CfA

哈勃对狼蛛星云的新观察

哈勃对狼蛛星云的新观察

ByNASA中文

A snapshot of the Tarantula Nebula (also known as 30 Doradus) is featured in this image from the NASA/ESA Hubble Space Telescope. The Tarantula Nebula is a large star-forming region of ionized hydrogen gas that lies 161,000 light-years from Earth in the Large Magellanic Cloud, and its turbulent clouds of gas and dust appear to swirl between the region’s bright, newly formed stars. The Tarantula Nebula is a familiar site for Hubble. It is the brightest star-forming region in our galactic neighborhood and home to the hottest, most massive stars known. This makes it a perfect natural laboratory in which to test out theories of star formation and evolution, and Hubble has a rich variety of images of this region. The NASA/ESA/CSA James Webb Space…

哈勃观测到猎户座星云中的双星

哈勃观测到猎户座星云中的双星

ByNASA中文

The bright variable star V 372 Orionis takes center stage in this image from the NASA/ESA Hubble Space Telescope, which has also captured a smaller companion star in the upper left of this image. Both stars lie in the Orion Nebula, a colossal region of star formation roughly 1,450 light-years from Earth. V 372 Orionis is a particular type of variable star known as an Orion Variable. These young stars experience some tempestuous moods and growing pains, which are visible to astronomers as irregular variations in luminosity. Orion Variables are often associated with diffuse nebulae, and V 372 Orionis is no exception; the patchy gas and dust of the Orion Nebula pervade this scene. This image overlays data from two of Hubble’s instruments. Data from…

韦伯在船底星云中发现了年轻恒星的爆发

韦伯在船底星云中发现了年轻恒星的爆发

ByNASA中文

By taking a closer look at one of Webb’s first images, the iconic Cosmic Cliffs, scientists have found dozens of energetic jets and outflows from young stars previously hidden by dust clouds. The discovery marks the beginning of a new era of investigating how stars like our Sun form, and how the radiation from nearby massive stars might affect the development of planets. The two dozen previously unknown outflows from extremely young stars were found by analyzing data from a specific wavelength of infrared light (4.7 microns). Webb’s observations uncovered a gallery of objects ranging from small fountains to burbling behemoths that extend light-years from the forming stars. Download the full-resolution, uncompressed version and supporting visuals from the Space Telescope Science Institute. Image Credit: NASA,…

哈勃望远镜观测到一个布满恒星的宇宙云

哈勃望远镜观测到一个布满恒星的宇宙云

ByNASA中文

A portion of the open cluster NGC 6530 appears as a roiling wall of smoke studded with stars in this image from the NASA/ESA Hubble Space Telescope. NGC 6530 is a collection of several thousand stars lying around 4,350 light-years from Earth in the constellation Sagittarius. The cluster is set within the larger Lagoon Nebula, a gigantic interstellar cloud of gas and dust. Hubble has previously imaged the Lagoon Nebula several times, including these images released in 2010 and 2011. It is the nebula that gives this image its distinctly smoky appearance; clouds of interstellar gas and dust stretch from one side of the image to the other. Astronomers investigated NGC 6530 using Hubble’s Advanced Camera for Surveys and Wide Field Planetary Camera 2. They…

NASA的詹姆斯·韦伯太空望远镜揭开了年轻恒星形成初期的面纱

NASA的詹姆斯·韦伯太空望远镜揭开了年轻恒星形成初期的面纱

ByNASA中文

科学家们“深入研究”韦伯望远镜的首批标志性图像之一，发现了数十个以前被尘埃云隐藏的年轻恒星的高能喷流和外流。这一发现标志着一个新时代的开始，即研究像太阳这样的恒星是如何形成，以及来自附近大质量恒星的辐射如何影响行星的发展。

NASA的詹姆斯·韦伯太空望远镜显示了几颗恒星“搅动”了南环星云

NASA的詹姆斯·韦伯太空望远镜显示了几颗恒星“搅动”了南环星云

ByNASA中文

来自NASA詹姆斯·韦伯太空望远镜的第一批数据显示，至少有两颗，甚至可能有三颗看不见的恒星，塑造了南环星云的形成了南环星云的椭圆形、曲线形。此外，通过将韦伯的红外图像与欧洲航天局（ESA）盖亚天文台的现有数据配对，研究人员第一次能够在形成星云之前精确地确定中心恒星的质量。由澳大利亚悉尼麦考瑞大学的奥索拉·德·马尔科领导的近70名研究人员组成的团队分析了韦伯对这颗垂死恒星的10次高度详细的曝光，得出了这些结果。

发射星云、暗星云与尘埃

发射星云、暗星云与尘埃

ByNASA中文

2022年11月30日 The Light, the Dark, and the Dusty Image Credit & Copyright: Anthony Quintile Explanation: This colorful skyscape spans about four full moons across nebula rich starfields along the plane of our Milky Way Galaxy in the royal northern constellation Cepheus. Near the edge of the region’s massive molecular cloud some 2,400 light-years away, bright reddish emission region Sharpless (Sh) 155 is at the center of the frame, also known as the Cave Nebula. About 10 light-years across the cosmic cave’s bright walls of gas are ionized by ultraviolet light from the hot young stars around it. Dusty reflection nebulae, like vdB 155 to the right, and dense obscuring clouds of dust also abound on the interstellar canvas. Astronomical explorations have revealed other dramatic signs…

哈勃望远镜观测到一个正在膨胀的宇宙云

哈勃望远镜观测到一个正在膨胀的宇宙云

ByNASA中文

A small, dense cloud of gas and dust called CB 130-3 blots out the center of this image from the NASA/ESA Hubble Space Telescope. CB 130-3 is an object known as a dense core, a compact agglomeration of gas and dust. This particular dense core is in the constellation Serpens and seems to billow across a field of background stars. Dense cores like CB 130-3 are the birthplaces of stars and are of particular interest to astronomers. During the collapse of these cores enough mass can accumulate in one place to reach the temperatures and densities required to ignite hydrogen fusion, marking the birth of a new star. While it may not be obvious from this image, a compact object teetering on the brink of…

哈勃太空望远镜发现神秘的宇宙“钥匙孔”

哈勃太空望远镜发现神秘的宇宙“钥匙孔”

ByNASA中文

This peculiar portrait from the NASA/ESA Hubble Space Telescope showcases NGC 1999, a reflection nebula in the constellation Orion. NGC 1999 is around 1,350 light-years from Earth and lies near the Orion Nebula, the closest region of massive star formation to Earth. NGC 1999 itself is a relic of recent star formation – it is composed of debris left over from the formation of a newborn star. Just like fog curling around a streetlamp, reflection nebulae like NGC 1999 shine by the light from an embedded source. In the case of NGC 1999, this source is the aforementioned newborn star V380 Orionis, which is visible at the center of this image. The most notable aspect of NGC 1999’s appearance, however, is the conspicuous hole in…