韦伯证实了哈勃测量的宇宙膨胀率的准确性，加深了哈勃常数危机之谜
NASA的詹姆斯·韦伯太空望远镜提供了新的能力来仔细审查和完善哈勃常数危机的一些最强有力的观测证据。来自约翰斯·霍普金斯大学和太空望远镜科学研究所的诺贝尔奖获得者亚当·里斯（Adam Riess）介绍了他和他的同事最近利用韦伯观测提高哈勃常数局部测量精度的工作。
按月归档： 9 月 2023
DROID 2捉风
Justin Hall lands the Dryden Remotely Operated Integrated Drone 2 (DROID 2) aircraft at NASA’s Armstrong Flight Research Center in Edwards, California, on Aug. 22, 2023, as part of the Advanced Exploration of Reliable Operation at Low Altitudes: Meteorology, Simulation and Technology campaign. The data gathered by studying wind from the ground to 2,000...
NGC 4632：藏着极环的星系
2023年9月13日 NGC 4632: Galaxy with a Hidden Polar Ring Credit: Jayanne English (U. Manitoba), Nathan Deg (Queen’s University) & WALLABY Survey, CSIRO/ASKAP, NAOJ/Subaru Telescope; Text: Jayanne English (U. Manitoba) Explanation: Galaxy NGC 4632 hides a secret from optical telescopes. It is surrounded by a ring of cool hydrogen gas orbiting at 90 deg...
弗兰克·卢比奥打破了NASA的单次太空飞行记录
In this image from July 24, 2023, astronaut Frank Rubio completes a session on the Surface Avatar Remote Control Terminal, which investigates how haptic controls, user interfaces, and virtual reality could command and control surface-bound robots from long distances. While aboard the International Space Station, Rubio has worked on several experiments involv...
星系团Abell 370及后方的天体
2023年9月12日 Galaxy Cluster Abell 370 and Beyond Image Credit: NASA, ESA, Jennifer Lotz and the HFF Team (STScI) Explanation: Some 4 billion light-years away, massive galaxy cluster Abell 370 is captured in this sharp Hubble Space Telescope snapshot. The cluster of galaxies only appears to be dominated by two giant elliptical galaxies and infested with faint a...
NASA露西航天器拍摄了第一张小行星丁基什的照片
在恒星背景下移动的小点是NASA的露西航天器首次看到主带小行星丁基什（Dinkish），这是该航天器将在其为期12年的发现之旅中访问的10颗小行星中的第一颗。露西于2023年9月2日和5日拍摄了这两张照片。
雪白的白鹭在水中搜寻
A snowy egret, identifiable by its slender black bill, black legs and yellow feet, marches through a pond near NASA’s Kennedy Space Center, looking for food in this image from March 29, 2007. This species inhabits salt marshes, ponds, rice field and shallow coastal bays from Maine to southern South America. They are also found in northern California, Texas, ...
靓丽的西村彗星
2023年9月11日 Beautiful Comet Nishimura Credit & Copyright: Petr Horálek / Institute of Physics in Opava Explanation: This scene would be beautiful even without the comet. By itself, the sunrise sky is an elegant deep blue on high, with faint white stars peeking through, while near the horizon is a pleasing tan. By itself, the foreground hills of eastern S...
美国新墨西哥州上空的日环食
2023年9月10日 An Annular Solar Eclipse over New Mexico Credit & Copyright: Colleen Pinski Explanation: What is this person doing? In 2012, an annular eclipse of the Sun was visible over a narrow path that crossed the northern Pacific Ocean and several western US states. In an annular solar eclipse, the Moon is too far from the Earth to block out the entire...
西村彗星
2023年9月9日 Comet Nishimura Grows Credit & Copyright: Peter Kennett Explanation: Comet Nishimura is growing. More precisely, the tails C/2023 P1 (Nishimura) are growing as it nears the Sun. Discovered only last month, the comet is already near naked eye brightness as it now moves inside the Earth’s orbit. The comet will be nearest the Earth next wee...