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James Webb Telescope
Nov 18, 2016

  • Developed by NASA one of the largest space telescope —which will replace currently functioning Hubble Telescope.

  • is 100 times powerful than the Hubble Space Telescope and may find the first galaxies that were formed in the early universe.

  • The space telescope will provide images of the first galaxies ever formed, and explore planets around distant stars.

  • It is a joint project of the NASA, the European Space Agency and the Canadian Space Agency.

  • The telescope is named as James Webb Space Telescope. JWST was formerly known as the "Next Generation Space Telescope" (NGST). It was renamed in Sept. 2002 after a former NASA administrator, James Webb

  • Unlike with Hubble, astronauts won’t be able to reach the JWST to fix a problem after it launches. The telescope will be stationed too far away for them to reach, about 930,000 miles from Earth.

  • Once it is in position, though, together the James Webb and Hubble will give scientists an unprecedented view of the universe.

Some salient feature of telescope

  • The Webb telescope’s infrared cameras are so sensitive that it needs to be shielded from the rays of the Sun. A five-layer sunshield of the size of a tennis court will prevent the heat from interfering with the telescope’s infrared sensors.

  • The layers work together to reduce the temperatures between the hot and cold sides of the observatory by about 298 degrees Celsius. Each successive layer of the sunshield, made of kapton, is cooler than the one below

James Webb Telescope

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