2021年11月24日 Pleiades: The Seven Sisters Star Cluster Image Credit & Copyright: Damien Cannane Explanation: Have you ever seen the Pleiades star cluster? Even if you have, you probably have never seen it as large and clear as this. Perhaps the most famous star cluster on the sky, the bright star […]
The Double Asteroid Redirection Test (DART), which will help determine if intentionally crashing a spacecraft into an asteroid is an effective way to change its course, is scheduled to launch no earlier than 1:21 a.m. EST Wednesday, Nov. 24 (10:21 p.m. PST Tuesday, Nov. 23) on a SpaceX Falcon 9 rock
2021年11月23日 The Sun in X-rays from NuSTAR Image Credit: NASA, NuSTAR, SDO Explanation: Why are the regions above sunspots so hot? Sunspots themselves are a bit cooler than the surrounding solar surface because the magnetic fields that create them reduce convective heating. It is therefore unusual th
The Flame Nebula, also called NGC 2024, is a large star-forming region in the constellation Orion that lies about 1,400 light-years from Earth. It’s a portion of the Orion Molecular Cloud Complex, which includes such famous nebulae as the Horsehead Nebula and Orion Nebula. This image focuses on the
2021年11月22日 Lunar Eclipse over a Skyscraper Image Credit & Copyright: Yuri Beletsky (Carnegie Las Campanas Observatory, TWAN) Explanation: Why is the Moon on top of this building? Planning. It took the astrophotographer careful planning — including figuring out exactly where to place the
2021年11月21日 Introducing Comet Leonard Image Credit & Copyright: Dan Bartlett Explanation: Here comes Comet Leonard. Comet C/2021 A1 (Leonard) was discovered as a faint smudge in January 2021 when it was out past Mars — but its orbit will take the giant shedding ice-ball into the inner Sol
2021年11月20日 An Almost Total Lunar Eclipse Image Credit & Copyright: Robert Fedez Explanation: Predawn hours of November 19 found the Moon in partly cloudy skies over Cancun, Mexico. Captured in this telephoto snapshot, the lunar disk is not quite entirely immersed in Earth’s dark umbral s
NASA astronaut Victor Glover speaks with students about his time aboard the International Space Station, Thursday, Nov. 18, 2021, at Ben’s Chili Bowl in Washington. Students from Cardozo Educational Campus, Friendship Technology Preparatory High School, McKinley Technical High School, Phelps High Sc
2021年11月19日 NGC 281: Starless with Stars Image Credit & Copyright: Wido Oerlemans – X-ray: Chandra, Infrared: Spitzer Explanation: In visible light the stars have been removed from this narrow-band image of NGC 281, a star forming region some 10,000 light-years away toward the constellati
2021年9月4日，NASA毅力号火星车上的Mastcam-Z仪器的视频拍摄到了该机构的机智号火星直升机的第13次飞行的特写镜头。 视频来源：NASA/JPL-Caltech/ASU/MSSS 最近9月飞行的下行图像，让火星车成像团队将一段旋翼飞行器表现近乎完美的视频整合在一起。 NASA毅力号火星车9月4日拍摄的机智号火星直升机第13次飞行的视频，提供了迄今为止最详细的旋翼机的运行情况。 机智号目前正在为其第16次飞行做准备，计划不早于11月20日星期六进行，但160.5秒的第13次飞行是机智号最复杂的飞行之一。它涉及飞入“Séítah”地质特征内的各种地形，并为火星车团队从多个角度拍摄露头
