NASA的詹姆斯·韦伯太空望远镜测量了一颗岩质系外行星的温度
一个国际研究团队使用NASA的詹姆斯·韦伯太空望远镜测量了岩质系外行星TRAPPIST-1 b的温度。测量基于该行星的热辐射：韦伯的中红外仪器（MIRI）检测到的以红外光形式释放的热能。结果表明，这颗行星的昼面温度约为500开尔文（约450华氏度），并表明它没有明显的大气层。
按月归档： 3 月 2023
地球辐射大气
The last rays of an orbital sunset illuminate the Earth’s atmosphere in this Feb. 17, 2023, photograph from the International Space Station as it orbited 269 miles above the Atlantic Ocean off the coast of Argentina. Astronauts aboard the space station see 16 sunrises and sunsets per day. Stay up to date with what’s happening aboard the space station. ...
北极巨石阵上空的极光
2023年3月27日 Aurora Over Arctic Henge Image Credit & Copyright: Cari Letelier Explanation: Reports of powerful solar flares started a seven-hour quest north to capture modern monuments against an aurora-filled sky. The peaks of iconic Arctic Henge in Raufarhöfn in northern Iceland were already aligned with the stars: some are lined up toward the exact nor...
流浪者
2023年3月26日 Wanderers Video Credit: Visuals: Erik Wernquist; Music: Christian Sandquist; Words & Voice: Carl Sagan Explanation: How far out will humanity explore? If this video’s fusion of real space imagery and fictional space visualizations is on the right track, then at least the Solar System. Some of the video’s wondrous sequences depict ...
金星与达文西辉光
2023年3月25日 Venus and the Da Vinci Glow Image Credit & Copyright: Giorgia Hofer Explanation: On March 23 early evening skygazers could watch Venus and a young crescent moon, both near the western horizon. On that date Earth’s brilliant evening star, faint lunar night side and slender sunlit crescent were captured in this telephoto skyscape posing a...
NASA一周新闻（2023年3月24日）
阿尔忒弥斯二号登月火箭正在组装……一些太空探索者获得了很高的荣誉……韦伯太空望远镜有一个有趣的发现……最新新闻速递，尽在「本周NASA」！
继续阿尔忒弥斯二号的工作
A technician works on part of the Space Launch System (SLS) rocket’s core stage for Artemis II in this March 11, 2023, image. Artemis II is the first Artemis mission that will send four astronauts around the Moon and return them home. On March 17, technicians joined the engine section to the rest of the rocket stage; all five major structures of the SLS’s ro...
为STEM领域的女性祝贺
Dr. Christyl Johnson, deputy director for technology and research investments at NASA’s Goddard Space Flight Center, speaks during a panel discussion as part of a Women’s History Month program, “Celebrating Women Who Tell Our Stories,” on Wednesday, March 22, 2023. The panel marked the launch of a new campaign to mobilize women at NASA to participate in stud...
远去的ZTF彗星
2023年3月24日 Outbound Comet ZTF Image Credit & Copyright: Rolando Ligustri Explanation: Former darling of the northern sky Comet C/2022E3 (ZTF) has faded. During its closest approach to our fair planet in early February Comet ZTF was a mere 2.3 light-minutes distant. Then known as the green comet, this visitor from the remote Oort Cloud is now nearly 13.3...
螺旋星系NGC 2841
2023年3月23日 Spiral Galaxy NGC 2841 Image Credit & Copyright: Roberto Marinoni Explanation: A mere 46 million light-years distant, spiral galaxy NGC 2841 can be found in planet Earth’s night sky toward the northern constellation of Ursa Major. This sharp image centered on the gorgeous island universe also captures spiky foreground Milky Way stars an...