James Webb
James Webb (named after a now deceased NASA administrator) was developed by the United States, Europe, and Canada. The space telescope was launched on Christmas Day. It is the successor to the famous Hubble Space Telescope, which is drawing to a close. In late January, after about a month of flying, James Webb arrived at his workplace 1.5 million kilometers from Earth. Once there, all systems are tested and the devices inside are cooled, so that the temperature of one of them reaches minus 266 degrees. The mirror has also been modified. They collect light coming from the universe and send it to measuring instruments.
James Webb has eighteen hexagonal mirrors that sit together, but can move independently of each other to focus. The mirror is made of beryllium, topped with a tiny gold layer, 100 nanometers thick. It is a thousand times thinner than human hair or paper. Beryllium is light, strong and can withstand extreme cold. Gold ensures that the mirror can see infrared light better.
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