保护地球，探索宇宙，发现文明
2020年11月25日 Andromeda over Patagonia Image Credit & Copyright: Gerardo Ferrarino Explanation: How far can you see? The Andromeda Galaxy at 2.5 million light years away is the most distant object easily seen with your unaided eye. Most other apparent denizens of the night sky — stars, clusters, and nebulae — typically range from a few hundred...
2020年11月24日 The Helix Nebula from CFHT Image Credit & Copyright: CFHT, Coelum, MegaCam, J.-C. Cuillandre (CFHT) & G. A. Anselmi (Coelum) Explanation: Will our Sun look like this one day? The Helix Nebula is one of brightest and closest examples of a planetary nebula, a gas cloud created at the end of the life of a Sun-like star. The outer gasses of...
The SpaceX Falcon 9 rocket carrying the Sentinel-6 Michael Freilich spacecraft lifts off from Space Launch Complex 4 at Vandenberg Air Force Base in California, Nov. 21, 2020, at 12:17 p.m. EST. The Sentinel-6/Jason-CS (Continuity of Service) mission consists of the Sentinel-6 Michael Freilich satellite, which will be followed by its twin, the Sentinel-6B sa...
坚韧号（Resilience）的空间站之旅；又一枚海洋观测卫星发射；阿尔忒弥斯（Artemis）任务关键的火箭系列测试有了新进展……最近新闻速递，尽在「本周NASA」！ Credit：NASA 11月15日，NASA宇航员迈克·霍普金斯（Mike Hopkins）、维克多·格洛弗（Victor Glover）、香农·沃克（Shannon Walker）和日本的野口聪一（Soichi Noguchi）乘坐SpaceX“坚韧号”载人龙飞船，从肯尼迪航天中心飞向太空。“当我们为全人类出发探索时，地球引力也无法阻止我们。”这次成功的发射开启了国际空间站的首个机组人员轮换任务，是NASA和SpaceX 6次认证载人任务中的第一个，同时也是NASA商业载人计划（Commercial Crew Program）的一部分。“载...
2020年11月23日 A Jupiter Vista from Juno Image Credit: NASA/JPL-Caltech/SwRI/MSSS; Processing & License: Kevin M. Gill; Explanation: Why do colorful cloud bands encircle Jupiter? Jupiter’s top atmospheric layer is divided into light zones and dark belts that go all the way around the giant planet. It is high horizontal winds — in excess of 300 ...
2020年11月22日 Dark Molecular Cloud Barnard 68 Image Credit: FORS Team, 8.2-meter VLT Antu, ESO Explanation: Where did all the stars go? What used to be considered a hole in the sky is now known to astronomers as a dark molecular cloud. Here, a high concentration of dust and molecular gas absorb practically all the visible light emitted from background stars. T...
2020年11月21日 Mars and Meteor over Jade Dragon Snow Mountain Image Credit & Copyright: Jeff Dai (TWAN) Explanation: A brilliant yellowish celestial beacon, Mars still dazzles in the night. Peering between clouds the wandering planet was briefly joined by the flash of a meteor in this moonless dark sky on November 18. The single exposure was taken as the E...
Observed with the NASA/ESA Hubble Space Telescope, the faint galaxy featured in this image is known as UGC 12588. Unlike many spiral galaxies, UGC 12588 displays neither a bar of stars across its center nor the classic prominent spiral arm pattern. Instead, to a viewer, its circular, white and mostly unstructured center makes this galaxy more reminiscent of ...
2020年11月20日 Global Map: Mars at Opposition Image Credit & Copyright: F. Colas / J.L. Dauvergne / G. Dovillaire / T. Legault / G. Blanchard / B. Gaillard / D. Baratoux / A, Klotz / S2P / IMCCE / OMP / Imagine Optic Explanation: This may be the best global Mars map made with a telescope based on planet Earth. The image data were captured by a team of obse...
Marcellus Proctor is an enrolled member of the Piscataway-Conoy Nation of Southern Maryland and the assistant chief in the Electrical Engineering Division at NASA’s Goddard Space Flight Center. In this position, he strives “to ensure that resources are allocated to support his employees in the building of flight hardware for Earth & Space Sc...