James Webb Space Telescope

詹姆斯·韦伯太空望远镜

From the NASA description:"The James Webb Space Telescope will be a large infrared telescope with a 6.5-meter primary mirror." The telescope was launched on December 25, 2021. JWST will be the premier observatory of the next decade, serving thousands of astronomers worldwide. It will study every phase in the history of our Universe, ranging from the first luminous glows after the Big Bang, to the formation of solar systems capable of supporting life on planets like Earth, to the evolution of our own Solar System."

根据NASA的描述：“詹姆斯·韦伯太空望远镜将是一个大型红外望远镜，其主镜直径为6.5米。”该望远镜于2021年12月25日发射。JWST将成为未来十年的首要观测站，为全球数千名天文学家服务。它将研究宇宙历史中的每一个阶段，从大爆炸后首次发光的光芒，到能够支持类地球行星上生命形成的太阳系，直至我们太阳系的演化。

By comparison, its predecessor, the Hubble Space Telescope, had a 2.4m mirror and was situated in an orbit 570 km from the Earth.

相比之下，其前一代望远镜——哈勃太空望远镜，配备了一个2.4米的镜片，位于地球上方570公里的轨道上。

NASA image

NASA图像

The Telescope will be placed at the Earth-Sun L2 Lagrange point which is outward from the Earth about 1% of the Earth-Sun distance.

望远镜将放置在地球-太阳L2拉格朗日点，该点位于地球约1%的地球-太阳距离之外。

NASA Images

From the NASA description: "The telescope itself will be operating at about 225 degrees below zero Celsius (minus 370 Fahrenheit). The temperature difference between the hot and cold sides of the telescope is huge - you could almost boil water on the hot side, and freeze nitrogen on the cold side!" Image courtesy NASA. The first James Webb image was released on July 11, 2022. Click on the image at right for a larger view.

根据NASA的描述：“望远镜本身将处于约零下225摄氏度（-370华氏度）的温度下。望远镜热端和冷端之间的温差非常大——在热端你几乎可以将水煮沸，而在冷端则可以将氮气冻结！” 该图片由NASA提供。詹姆斯·韦伯望远镜的第一张图像于2022年7月11日发布。点击右图查看更大版本。

References:

参考文献：

NASA 描述

詹姆斯·韦伯轨道

NASA 图像