2022年10月27日 Sunset, Moonset, Taj Mahal Image Credit & Copyright: Neelam and Ajay Talwar (TWAN) Explanation: On October 25th, Sun and New Moon set together as seen from Agra, India. Their close conjunction near the western horizon, a partial solar eclipse, was captured in this elevated view in h […]
编者按：本文重点介绍了韦伯科学进展中的数据，这些数据尚未通过同行评审。 NASA的詹姆斯·韦伯太空望远镜是专门用来探测来自遥远星系的微弱红外光，并让天文学家瞥见早期宇宙的情况。在我们宇宙的这个早期阶段，星系的性质既不为人所知，也不为人理解。但是在前景星系团的引力透镜的帮助下，暗淡的背景星系可以被放大，并在图像的不同部分多次出现。 星系团MACS0647的巨大引力就像一个宇宙透镜，用来弯曲和放大来自更远的MACS0647-JD星系的光线。它还将JD系统放大了三倍，使其图像出现在三个不同的位置。这些用白框突出显示的图像标记为JD1、JD2和JD3；放大的视图显示在右侧的面板中。在这张来自韦伯近红外
This mosaic is composed of images covering the entire sky, taken by the Wide-field Infrared Survey Explorer (WISE) as part of WISE’s 2012 All-Sky Data Release. By observing the entire sky, WISE could search for faint objects, like distant galaxies, or survey groups of cosmic objects. Not visible to
2022年10月26日 Cocoon Nebula Wide Field Image Credit & Copyright: Andy Ermolli Explanation: When does a nebula look like a comet? In this crowded starfield, covering over two degrees within the high flying constellation of the Swan (Cygnus), the eye is drawn to the Cocoon Nebula. A compact star fo
2022年10月25日 Jupiter Rotates as Moons Orbit Video Credit & Copyright: Makrem Larnaout Explanation: Jupiter and its moons move like our Sun and its planets. Similarly, Jupiter spins while its moons circle around. Jupiter’s rotation can be observed by tracking circulating dark belts and light zone
During its 40th close pass by Jupiter, our Juno spacecraft saw Ganymede cast a large, dark spot on the planet on Feb. 25, 2022. JunoCam captured this image from very close to Jupiter, making Ganymede’s shadow appear especially large. At the time the raw image was taken, the Juno spacecraft was about
2022年10月24日 Clouds Around Galaxy Andromeda Image Credit & Copyright: Andrew Fryhover Explanation: What are those red clouds surrounding the Andromeda galaxy? This galaxy, M31, is often imaged by planet Earth-based astronomers. As the nearest large spiral galaxy, it is a familiar sight with dark
2022年10月23日 Milky Way and Zodiacal Light over Australian Pinnacles Image Credit & Copyright: Jingyi Zhang Explanation: What strange world is this? Earth. In the foreground of the featured image are the Pinnacles, unusual rock spires in Nambung National Park in Western Australia. Made of ancient
When a massive star collapsed in the Cassiopeia constellation, it generated a supernova explosion with some of the fastest shockwaves in the Milky Way. These speedy shock waves are one of the reasons the Cassiopeia A (Cas A) supernova remnant was chosen to be our Imaging X-ray Polarimetry Explorer’s
2022年10月22日 NGC 1499: The California Nebula Image Credit & Copyright: Stephen Kennedy Explanation: Drifting through the Orion Arm of the spiral Milky Way Galaxy, this cosmic cloud by chance echoes the outline of California on the west coast of the United States. Our own Sun also lies within the
