The mirrors are being mounted.
NASA has announced its first success this year. The team that controls the James Webb Space Telescope, which is to replace the famous Hubble Space Telescope in the future, has taken the hardest step. Unfold the entire sunshine.
The rocket with the telescope launched on December 25 last year and is now heading for its target position over 1.5 million kilometers from Earth. It should be 5-10 years in the L2 center of the Earth-Sun system. One of the main tasks of the Webb Telescope is to capture the faint infrared rays that reach it from stars and galaxies that formed 13.5 billion years ago. This should help to better understand the formation of star systems and improve the search for life outside our solar system. The telescope is expected to arrive in its final orbit at the end of January.
Webb’s telescope stretched the sun’s shield in space.
Web telescope
The development of the device took several decades. The main reason is the fact that it will not be possible to physically repair it. Therefore, its service life is limited. However, scientists are convinced that remarkable discoveries will come during its operation. “Webb’s telescope will act as a time machine. We will literally see the birth of the first stars. The Big Bang, which took place 13.8 billion years ago, “says BBC Discovery science correspondent Jonathan Amos.” People can expect sharp and amazing images thanks to large detectors. We will see hot stars, cold stars, blue objects, red objects and galaxies from now until billions of years ago, “described British astronomer Mark McCaughrean.
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The launch was followed by 258 points, which Webb’s telescope had to overcome to function successfully. Due to his size, he traveled folded. One of the most critical steps was the dismantling of a unique sunshine. It consists of five layers of super-thin plastic called Kapton. The outer layer facing the direct sunlight is 0.05 millimeters. The other four have a human hair thickness. The shield is intended to protect scientific instruments from the sun’s heat. With the help of eight motorcycles, hundreds of mechanisms and cables with a total length of 400 meters, they spread out to the size of a tennis court.
A big step for humanity
Despite the training that took place on Earth, the technicians had to solve several problems. The high temperature caused the motorcycles to have trouble unfolding the shield perfectly. The scientists at the center had to rotate the telescope against the sun to allow them to cool down.
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Another important step is to lay out two-size mirrors. The larger one is covered with gold and has a diameter of 6.6 meters. Such a huge mirror, whose task is to capture even the faintest flashes in space, has never been designed and sent into orbit. The engineers therefore decided to have each of the 18 hexagonal segments that make up the primary mirror gradually unfolded in the same way as a folding table is assembled.
According to plans that can be watched live on the Internet, the mirrors should be ready in the middle of this month. Subsequently, it must focus on distant galaxies.
Watch a live broadcast from Sunshield Layout:
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Source: Youtube
Source:
www.blesk.cz, www.webb.nasa.gov/whereIsWebb, www.webb.nasa.gov/mirrors
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