Скачать или смотреть James Webb Space Telescope Explained | Plans By NASA & ESA [JWST]

James Webb Space Telescope (JWST), U.S.–European Space
Agency–Canadian satellite observatory proposed as the
successor to the Hubble Space Telescope (HST) and scheduled
to be launched by an Ariane 5 rocket in 2021. The JWST will
have a mirror 6.5 meters (21.3 feet) in diameter, seven times
larger than that of the HST, and will orbit the Sun in a
Lissajous pattern around the second Lagrangian point,
about 1.5 million km (930,000 miles) from Earth on the
planet’s nightside. The james webb telescope is designed
primarily to detect light in the infrared to observe sources such as the
first galaxies and protostars that radiate at those wavelengths.
Since infrared satellite observatories must be protected from
thermal radiation, a sun shield of about 150 square meters
(1,600 square feet) in the area will be deployed to protect
the telescope. Since there is no rocket wide enough to hold
the JWST, both the sun shield and the mirror will be launched
folded and will unfold when the telescope reaches its proper
orbit. The James Webb launch may be the biggest launch in the world of astronomy which may help NASA and esa in achieving greater
heights in space, in the world of astronomy and astrophysics.

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