2022年5月10日 NGC 6334: The Cat’s Paw Nebula Image Credit & Copyright: Stefan Steve Bemmerl & Team Wolfatorium (Hakos/Namibia) Explanation: Nebulas are perhaps as famous for being identified with familiar shapes as perhaps cats are for getting into trouble. Still, no known cat could hav […]
NASA astronaut Jessica Watkins floats in the International Space Station’s cupola, a direct nadir viewing window from which Earth and celestial objects are visible. Watkins reported for duty in August 2017 and completed two years of training as an astronaut candidate. Her astronaut candidate trainin
影像来源：NASA/JPL-Caltech (left), NASA/ESA/CSA/STScI (right) NASA的詹姆斯·韦伯太空望远镜上的所有四个科学仪器均已校准完毕，之前展示天文台全视野的工程图像所示。现在，我们仔细看一下这幅图像，聚焦于韦伯最冷的仪器：中红外仪器，简称MIRI。 MIRI测试图像（7.7微米）显示了大麦哲伦星云的一部分。银河系的这个小卫星星系提供了一个稠密的恒星场来测试韦伯的性能表现。 这张 MIRI 特写照片与NASA斯皮策太空望远镜的红外阵列相机（8.0 微米）拍摄的同一目标的旧图像进行了比较。退役的斯皮策望远镜是NASA的大天文台之一，也是第一个提供近红外
2022年5月9日 A Martian Eclipse: Phobos Crosses the Sun Video Credit: NASA, JPL-Caltech, ASU MSSS, SSI Explanation: What’s that passing in front of the Sun? It looks like a moon, but it can’t be Earth’s Moon, because it isn’t round. It’s the Martian moon Phobos. The feature
2022年5月8日 Spiral Galaxy NGC 1512: The Inner Rings Image Credit: NASA, ESA, Hubble Space Telescope Explanation: Most galaxies don’t have any rings — why does this galaxy have two? To begin, the bright band near NGC 1512’s center is a nuclear ring, a ring that surrounds the galaxy ce
2022年5月7日 Firefall by Moonlight Image Credit & Copyright: Tara Mostofi Explanation: On certain dates in February, an elusive firefall can be spotted at sunset in Yosemite National Park, when water flows, the weather cooperates and the direction to the setting Sun is just right. Often photograph
The SpaceX Crew Dragon Endurance spacecraft is seen shortly after it landed with NASA astronauts Raja Chari, Kayla Barron, Tom Marshburn, and European Space Agency astronaut Matthias Maurer aboard. The craft splashed down in the Gulf of Mexico, off the coast of Tampa, Florida, Friday, May 6, 2022. M
2022年5月6日 NGC 3572 and the Southern Tadpoles Image Credit & Copyright: Carlos Taylor Explanation: This cosmic skyscape features glowing gas and dark dust clouds along side the young stars of NGC 3572. A beautiful emission nebula and star cluster it sails far southern skies within the nautical c
The SpaceX Dragon Endurance spacecraft is seen just after undocking from the forward port of the International Space Station’s Harmony module at 1:20 a.m. EDT, Thursday, May 5, 2022. Endurance is bringing Crew-3 back to Earth, including NASA astronauts Kayla Barron, Raja Chari, and Tom Marshburn, an
在NASA 2001年奥德赛轨道飞行器上的热发射成像系统（THEMIS）相机拍摄的这些图像中，主要由二氧化碳组成的火星表面霜冻呈现蓝白色。THEMIS拍摄肉眼可感知的可见光和热敏红外线图像。 影像来源：NASA/JPL-Caltech/ASU 一项使用NASA火星奥德赛轨道器数据的新研究可能解释了为什么肉眼看不到火星上的霜冻，以及为什么某些斜坡上会出现尘埃崩塌。 去年，科学家们在研究NASA的火星奥德赛轨道器在黎明时分拍摄的火星表面图像时感到困惑。当他们用肉眼所能感知的可见光观察火星表面时，他们能看到由初升的太阳照亮的幽灵般的蓝白色晨霜。但使用轨道飞行器的热敏相机，霜冻出现的范围更广，包括在看
