In less than three weeks, NASA, the European Space Agency and the Canadian Space Agency will finally launch the James Webb Space Telescope into orbit. And it’s been a long time coming.
The new observatory has been created as a successor to the aging Hubble Space Telescope and will be the largest and most powerful space science telescope ever constructed by NASA.
The machine comprises a 21-foot mirror made up of 18 golden plates. This primary mirror reflects infrared rays to a small mirror, which then directs them to an array of four sensors. These include infrared cameras, near-infrared spectrographs and other infrared-sensitive instruments.
All this will help the James Webb Telescope observe parts of space that have never been seen…
News Source: https://jalopnik.com/what-three-decades-did-for-space-exploration-as-nasa-wo-1848144171