保护地球，探索宇宙，发现文明
追踪我们的下一次火星着陆… 下一次国际空间站补给任务的科学研究… 以及最新的空间站飞行指挥… 最新新闻速递，尽在「本周NASA」！ 跟踪火星2020任务 经过近7个月、3亿英里的旅程，火星2020毅力号火星车和机智号直升机将于2月18日抵达这颗红色星球。毅力号将使用其整套仪器来寻找古代微生物生命的迹象，并测试技术为未来人类对火星的探索铺平道路。 “火星车展示了探索精神，它利用科学技术和人类探索在许多领域推进我们的目标。而毅力号，顾名思义，就是将我们带到那里的人类精神。”美国宇航局副局长托马斯·祖布琴（Thomas Zurbuchen），科学管理员。 你可以在MARS.NASA.GOV/MARS2020上追踪宇宙飞船的最后一段火星之旅，并在美国东部时间下午2点15分在NASA电视和NASA网站上观看登陆日报道。 ...
There are more than 100,000 proteins in the human body. Every structure is different, and each one of them holds important information related to our health. Each protein has a unique and complicated structure that is closely related to its function. Therefore, revealing a protein’s structure leads to an understanding of its function. However, it is difficul...
2021年02月12日 Spiral Galaxy NGC 1350 Image Credit & Copyright: Mike Selby, Warren Keller Explanation: This gorgeous island universe lies about 85 million light-years distant in the southern constellation Fornax. Inhabited by young blue star clusters, the tightly wound spiral arms of NGC 1350 seem to join in a circle around the galaxy’s large, bright...
This stunning image captures a small region on the edge of the inky Coalsack Nebula, or Caldwell 99. Caldwell 99 is a dark nebula — a dense cloud of interstellar dust that completely blocks out visible wavelengths of light from objects behind it. The object at the center of the image is a (much smaller) protoplanetary nebula. The protoplanetary nebula phase ...
2021年02月11日 Cygnus Mosaic 2010 – 2020 Image Credit & Copyright: J-P Metsavainio (Astro Anarchy) Explanation: In brush strokes of interstellar dust and glowing gas, this beautiful skyscape is painted across the plane of our Milky Way Galaxy near the northern end of the Great Rift and the constellation Cygnus the Swan. Composed over a decade with 40...
2021年02月10日 Firing Lasers to Tame the Sky Image Credit & Copyright: Juan Carlos Muñoz / ESO; Text: Juan Carlos Muñoz Explanation: Why do stars twinkle? Our atmosphere is to blame as pockets of slightly off-temperature air, in constant motion, distort the light paths from distant astronomical objects. Atmospheric turbulence is a problem for astronomers b...
This view of a sunrise breaking through the Earth’s horizon was taken on Feb 3, 2021, as the International Space Station orbited 271 miles above the Pacific Ocean off the coast of southern Chile in South America. The space station, humanity’s only orbital laboratory, orbits the Earth about every 90 minutes, witnessing around 16 sunrises each day....
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 remnant of the supernova that created the Crab Nebula. A carefu...
In this image from 2018, NASA astronaut Jeanette Epps trains in a U.S. spacesuit at the Johnson Space Center. Epps is assigned to NASA’s Boeing Starliner-1 mission, the first operational crewed flight of Boeing’s CST-100 Starliner spacecraft on a mission to the International Space Station. She will join NASA astronauts Sunita Williams and Josh Cassada for a ...
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 image left. Additionally, the winds and radiation from a small c...