保护地球, 探索宇宙, 发现文明
The densely packed globular cluster NGC 6325 glistens in this image from the NASA/ESA Hubble Space Telescope. This concentrated group of stars lies around 26,000 light-years from Earth in the constellation Ophiuchus. Globular clusters like NGC 6325 are tightly bound collections of stars with anywhere from tens of thousands to millions of members. They can be...
Two neutron stars begin to merge in this illustration, blasting a jet of high-speed particles and producing a cloud of debris. These gamma-ray bursts (GRBs) are the most powerful events in the universe. Scientists think these kinds of events are factories for a significant portion of the universe’s heavy elements, including gold. They based their estimates o...
This image from the NASA/ESA Hubble Space Telescope shows the globular star cluster NGC 2419. Globular clusters are both beautiful and fascinating. They are spherical groups of stars that orbit the center of a galaxy, and in the case of NGC 2419, that galaxy is our own Milky Way. NGC 2419 is around 300,000 light-years from the solar system, in the constellat...
NASA詹姆斯·韦伯太空望远镜的一张新的中红外图像显示了从地球上看到的340年前的超新星遗迹仙后座A（Cas A）。Cas A是我们银河系中已知的最年轻的大质量恒星爆炸残骸。
Stars leave streaks of light in concentric circles in this March 16, 2012, view from the International Space Station. To create this composite long exposure, NASA astronaut Don Pettit combined multiple 30-second exposures from a mounted camera on the space station into one image. The orbiting laboratory travels 5 miles per second, traveling around our planet...
沃尔夫-拉叶星是已知的最明亮、质量最大、可探测时间最短的恒星之一，这颗罕见的恒星是NASA詹姆斯·韦伯太空望远镜于2022年6月首次观测到的恒星之一。韦伯用其强大的红外仪器以前所未有的细节展示了这颗名为WR 124的恒星。这颗恒星位于1.5万光年外的人马座。
科学家们创建了一个庞大的合成巡天，展示了我们对南希·格雷斯·罗曼太空望远镜未来观测的期待。虽然它只代表了真实未来调查的一小部分，但这个模拟版本包含了惊人的数量——3300万个星系，以及我们银河系中的20万颗前景恒星。
大约一万年前，船帆座的一颗巨星爆炸发出的光到达了地球。这颗超新星留下了一个被称为脉冲星的致密物体，它在旋转时似乎有规律地变亮，就像一座宇宙灯塔。从这颗脉冲星的表面，出现了以接近光速传播的粒子风，形成了带电粒子和磁场的混乱大杂烩，并与周围的气体相撞。这种现象被称为脉冲星风星云。 这张照片显示了船帆座脉冲星风星云。浅蓝色代表来自NASA X射线成像偏振探测器的X射线偏振数据。粉色和紫色对应于NASA钱德拉X射线天文台的数据，该天文台此前曾多次观测到船帆座。NASA的哈勃太空望远镜拍摄了背景中的恒星。单击此处查看未标记的图像。 影像来源：X射线： (IXPE) NASA/MSFC/Fei Xie & (Chandra) NASA/CXC/SAO；光学：NASA/STScI Hubble/Chandra；由N...
一项新的模拟显示，NASA的南希·格雷斯·罗曼太空望远镜将在2027年5月发射时，以前所未有的方式揭示宇宙的演变。凭借其快速成像广阔太空的能力，罗曼将帮助我们了解宇宙是如何从最初的带电粒子海洋转变为我们今天所看到的庞大宇宙结构的复杂网络。
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 brig...