2021年02月09日 Flashes of the Crab Pulsar Video Credit & Copyright: Martin Fiedler Explanation: It somehow survived an explosion that would surely have destroyed our Sun. Now it is spins 30 times a second and is famous for the its rapid flashes. It is the Crab Pulsar, the rotating neutron star rem […]
2021年02月08日 WR32 and Interstellar Clouds in Carina Image Credit & Copyright: Ariel Cappelletti Explanation: Stars can be like artists. With interstellar gas as a canvas, a massive and tumultuous Wolf-Rayet star has created the picturesque ruffled half-circular filaments called WR32, on the imag
为国际空间站提供新的动力来源…… 针对第二次绿色试跑进行的点火测试…… 太空发射系统的另一个重大推动力…… 最新新闻速递，尽在「本周NASA」！ 国际空间站的新能源 2月1日，迈克·霍普金斯和维克多·格洛弗在国际空间站外完成了5小时20分钟的太空行走，以更换太阳能阵列的电池并升级空间站的一些外部摄像头。太空行走结束了为期四年的工作，用新的锂离子电池更换老化的镍氢电池。计划在不久的将来再进行两次太空行走将重点放在安装新的太阳能电池阵列所需的工作上，这将增加空间站的现有电力供应。 针对第二次绿色试跑点火试验 NASA计划在2月21日这周在斯坦尼斯航天中心的B-2测试台上对太空发射系统（SLS）的核
2021年02月07日 Blue Straggler Stars in Globular Cluster M53 Image Credit: ESA/Hubble, NASA Explanation: If our Sun were part of this star cluster, the night sky would glow like a jewel box of bright stars. This cluster, known as M53 and cataloged as NGC 5024, is one of about 250 globular clusters that
2021年02月06日 A Northern Winter Night Image Credit & Copyright: Lukasz Zak Explanation: Snow blankets the ground in this serene forest and sky view. Assembled in a 360 degree panoramic projection, the mosaicked frames were captured at January’s end along a quiet country road near Siemiony,
2021年02月05日 Apollo 14 Heads for Home Image Credit: Apollo 14, NASA, JSC, ASU (Image Reprocessing: Andy Saunders) Explanation: Fifty years ago this Sunday (February 7, 1971), the crew of Apollo 14 left lunar orbit and headed for home. They watched this Earthrise from their command module Kittyhawk. W
2021年02月04日 Apollo 14: A View from Antares Image Credit: Edgar Mitchell, Apollo 14, NASA; Mosaic – Eric M. Jones Explanation: Fifty years ago this Friday, Apollo 14’s Lunar Module Antares landed on the Moon. Toward the end of the stay astronaut Ed Mitchell snapped a series of photos of t
2021年02月03日 Found on the Moon: Candidate for Oldest Known Earth Rock Video Credit: NASA, Astromaterials 3D, Erika Blumenfeld et al. Explanation: Was the oldest known rock on Earth found on the Moon? Quite possibly. The story opens with the Apollo 14 lunar mission. Lunar sample 14321, a large rock fo
2021年02月02日 A Colorful Quadrantid Meteor Image Credit & Copyright: Frank Kuszaj Explanation: Meteors can be colorful. While the human eye usually cannot discern many colors, cameras often can. Pictured is a Quadrantids meteor captured by camera over Missouri, USA, early this month that was not
2021年02月01日 Lunar Halo over Snowy Trees Image Credit & Copyright: Göran Strand Explanation: Have you ever seen a halo around the Moon? This fairly common sight occurs when high thin clouds containing millions of tiny ice crystals cover much of the sky. Each ice crystal acts like a miniature len
