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NASA钱德拉X射线天文台开启宇宙宝藏宝库

这组图片对来自各种太空探测任务和望远镜的不同种类的光的图像进行了组合,以更好地理解宇宙。每个合成图像都包含来自钱德拉X射线天文台(Chandra X-ray Observatory)的X射线数据和其他望远镜的数据。这些图片分别显示了一系列不同的天体,包括梅西耶82星系、阿贝尔2744星系团、超新星1987A、海山二星、车轮星系和螺旋星云。 来源:NASA / CXC / SAO,NASA /STScI,NASA /JPL-Caltech / SSC,ESO /NAOJ / NRAO,NRAO /AUI / NSF,NASA /CXC / SAO / PSU和NASA /ESA 人类可以通过全球 […]

NASA·每日一图

哈勃望远镜收藏了一袋满满的星星

Many colorful stars are packed close together in this image of the globular cluster NGC 1805, taken by the NASA/ESA Hubble Space Telescope. This tight grouping of thousands of stars is located near the edge of the Large Magellanic Cloud, a satellite galaxy of our own Milky Way. The stars orbit close

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哈勃发现了参宿四神秘变暗事件背后的秘密

美国航空航天局(NASA)哈勃空间望远镜的观测结果表明,红超巨星(red supergiant)参宿四(Betelgeuse,又称猎户座α星,α Orionis)的意外变暗很可能是由于大量热物质喷射到太空中,形成的尘埃云阻挡了参宿四表面的星光而造成的。 哈勃的研究团队认为,从恒星表面大型对流单元的上升流中释放出的超高温等离子体,在穿过高温大气到达温度较低的外层大气时,降温冷却形成了尘埃颗粒,进而产生了尘埃云。从2019年末开始,这些尘埃云阻挡了大约四分之一从恒星表面射出的光线,直到2020年4月,恒星才恢复了正常亮度。 参宿四是一颗年迈的红超巨星,由于它的内核中复杂而变化多端的核聚变反应,参宿

NASA·每日一图

哈勃望远镜看到了恒星爆炸的边缘

While appearing as a delicate and light veil draped across the sky, this image from the NASA/ESA Hubble Space Telescope actually depicts a small section of the Cygnus supernova blast wave, located around 2,400 light-years away. The name of the supernova remnant comes from its position in the norther

NASA·每日一图

费米描记器与妇女平等日

What does this Fermi Gamma-ray Space Telescope Spirograph have in common with Women’s Equality Day? The Fermi mission is run by Project Scientist Dr. Elizabeth Hays, one of many female scientists and leaders at NASA. Hays and her deputy, Dr. Judith Racusin, are astrophysicists in the Astrophys

NASA·每日一图

哈勃望远镜钩住了超新星宿主星系

This image from the NASA/ESA Hubble Space Telescope features the spectacular galaxy NGC 2442, nicknamed the Meathook galaxy owing to its extremely asymmetrical and irregular shape. This galaxy was host to a supernova explosion spotted in March 2015, known as SN 2015F, that was created by a white dwa

NASA·每日一图

哈勃望远镜远近都能看到

The barred spiral galaxy known as NGC 4907 shows its starry face from 270 million light-years away to anyone who can see it from the Northern Hemisphere. This is a new image from the NASA/ESA Hubble Space Telescope of the face-on galaxy, displaying its beautiful spiral arms, wound loosely around its

NASA·每日一图

哈勃望远镜拍摄到了边缘的星系

The galaxy known as NGC 5907 stretches wide across this image. Appearing as an elongated line of stars and dark dust, the galaxy is categorized as a spiral galaxy just like our own Milky Way. In this new image from the NASA/ESA Hubble Space Telescope, we don’t see the beautiful spiral arms because w

NASA·每日一图

哈勃望远镜有一个明亮的发现

Seen here in incredible detail, thanks to the NASA/ESA Hubble Space Telescope, is the starburst galaxy formally known as PLCK G045.1+61.1. The galaxy, which appears as multiple reddish dots near the center of the image, is being gravitationally lensed by a cluster of closer galaxies, also seen in th

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