保护地球，探索宇宙，发现文明
Like Sherlock Holmes’s magnifying glass, the NASA/ESA Hubble Space Telescope can peer into an astronomical mystery in search of clues. The enigma in question concerns the globular cluster Ruprecht 106, pictured here. Unlike most globular clusters, Ruprecht 106 may be what astronomers call a single population globular cluster. While the majority of stars in a...
This new image from NASA’s Hubble Space Telescope looks at two spiral galaxies, collectively known as Arp 303. The pair, individually called IC 563 (bottom right) and IC 564 (top left), are 275 million light-years away in the direction of the constellation Sextans. The image holds data from two separate Hubble observations of Arp 303. The first used Hubble’s...
This Hubble Space Telescope image shows a section of the spiral galaxy nicknamed the Needle’s Eye – an appropriately diminutive name for a dwarf spiral galaxy. The Needle’s Eye, also known as NGC 247 and Caldwell 62, is located about 11 million light-years away in the Sculptor Group – the closest group of galaxies to our own (the Local Group). The galaxy was...
NASA的哈勃太空望远镜完成了近30年的马拉松比赛，校准了40多个时空“里程碑”，以帮助科学家精确测量宇宙的膨胀率——这是一项曲折的探索。 这组来自NASA哈勃太空望远镜的 36 幅图像展示了这些特征星系，它们都是造父变星和超新星的宿主。 这两种天体现象都是天文学家用来确定天文距离的重要工具，并已被用于改进我们对哈勃常数（宇宙膨胀率）的测量。 这张照片中显示的星系（从顶行，左行到底行，右行）是：NGC 7541，NGC 3021，NGC 5643，NGC 3254，NGC 3147，NGC 105，NGC 2608，NGC 3583，NGC 3147，Mrk 1337，NGC 5861，NGC 2525，NGC 1015，UGC 9391，NGC 691，NGC 7678，NGC 2442，NGC 5468，N...
This new NASA Hubble Space Telescope image captures the central region of the gigantic elliptical galaxy NGC 474. Located some 100 million light-years from Earth, NGC 474 spans about 250,000 light-years across – that’s 2.5 times larger than our own Milky Way galaxy! Along with its enormous size, NGC 474 has a series of complex layered shells that surround it...
This new NASA Hubble Space Telescope image spotlights the giant elliptical galaxy, UGC 10143, at the heart of galaxy cluster, Abell 2147, about 486 million light-years away in the head of the serpent, the constellation Serpens. UGC 10143 is the biggest and brightest member of Abell 2147, which itself may be part of the much larger Hercules Supercluster of ga...
Astronomers have identified a rapidly growing black hole in the early universe that is considered a crucial “missing link” between young star-forming galaxies and the first supermassive black holes, using data from the Hubble Space Telescope to make this discovery. This artist’s impression is of a supermassive black hole that is inside the ...
NASA的哈勃太空望远镜建立了一个非凡的新基准：探测宇宙大爆炸后最初十亿年内存在的恒星的光——这是迄今为止观测到的最远的一颗恒星。 与之前哈勃望远镜在2018年观测到的单星记录保持者相比，这一发现是一个巨大的飞跃。那颗恒星存在于宇宙大约 40 亿年的时候，即宇宙当前年龄的 30% ，天文学家将其称为“红移 1.5”。科学家使用“红移”一词是因为随着宇宙膨胀，来自遥远物体的光在向我们传播时会被拉伸或“移动”到更长、更红的波长。 这颗新发现的恒星距离地球如此之远，以至于它的光需要 129 亿年才能到达地球，在我们看来，它就像宇宙只有当前年龄的 7%，红移 6.2 时的那样。以前在如此遥远的距离上看到的最小物体是嵌入早期星系中的星团。 巴尔的摩约翰霍普金斯大学的天文学家布莱恩·韦尔奇说：“一开始我们几乎不相信它，它比...
An energetic outburst from an infant star streaks across this image from the NASA/ESA Hubble Space Telescope. This stellar tantrum – produced by an extremely young star in the earliest phase of formation – consists of an incandescent jet of gas travelling at supersonic speeds. As the jet collides with material surrounding the still-forming star, the shock he...
This striking image from the NASA/ESA Hubble Space Telescope showcases Arp 298, a stunning pair of interacting galaxies. Arp 298 – which comprises the two galaxies NGC 7469 and IC 5283 – lies roughly 200 million light-years from Earth in the constellation Pegasus. The larger of the two galaxies pictured here is the barred spiral galaxy NGC 7469, and IC 5283 ...