JWST Telescope to view boundless Universe.
Dhaliya Nazreen
James Webb Space Telescope (JWST or Webb) | credits: NASA
NASA is continuously pursing different space mission to explore the limitlessness of Universe. NASA collaborates with ESA-CSA telescope to launch James Webb Space Telescope (JWST or Webb), the largest most powerful and complex space telescope ever built and launched into space. NASA is enough confident that this expectation will alter our fundamental understanding about Universe.
JWST is an infrared observatory that will complement and extend the discoveries of Hubble Telescope with longer wavelength coverage and greatly improved sensitivity. It's broad range of investigations in the field of astronomy and cosmology, comprising the most distant objects and events in the Universe like the formation of first galaxy and also to take a close took in the clouds where stars and planetary systems that are forming today.
The primary mirror of JWST, the optical telescope element comprised of 18 hexagonal mirror segments made of gold plated beryllium to form a mirror of dia. 6.5 m, which is large enough than Hubble's 2.4 m mirror.
Since Hubble Telescope only observe ultraviolet, visible and near infrared spectra, JWST will observe low frequency range from low wavelength visible light, through mid frequency infrared, that allows to observe high red shift that are too old and too distant which can't be observed by Hubble. This telescope must be kept in cold atmosphere in order to observe infrared without any interference, so that JWST will be placed in space near to Earth-Sun L2 Lagrange point and a large sunshield made up of silicon walled and are minimum coated crepton well reepo at mirror and instrument lower than 50 K.
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The progress in construction of JWST began in 1996 and was expected to launch in 2007 in a budget of 500 million. But this project is delayed due to cost over run and redesigning in 2005. It's construction was ended in 2016, simultaneously extensive testing phase began. In March 2018, launch was delayed by NASA due to the sunshield of telescope ripped during the paradise. The unexpected arrival of of covid pandemic further suspended on March 2020. When work was resumed the launch date is announced on October 31 2021. The total cost for developing the telescope is $ 10 billion.
JWST is being developed by NASA, European Space Agency and Canadian Space Agency. The NASA Goddart Space Flight centre continues the development following operation after launch by Space Telescope Science Institute. This telescope was named after James E Webb, who was the administrator of NASA from 1961 to 1968, played an integral role in Apollo Mission.