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NASA’s revolutionary James Webb Space Telescope due for launch today; check details here | World News

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December 25, 2021
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NASA’s revolutionary James Webb Space Telescope due for launch today; check details here | World News
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New Delhi: NASA`s James Webb Space Telescope, a revolutionary $9 billion instrument able to peer more deeply into the cosmos than ever, is due for launch on Saturday from South America`s northeastern coast, opening a highly anticipated new era of astronomical exploration.

The powerful infrared telescope, hailed by NASA as the premiere space-science observatory of the next decade, was packed inside the cargo bay of an Ariane 5 rocket poised for blastoff at 5:50 pm (IST) (1220 GMT) from the European Space Agency`s (ESA) launch base in French Guiana.

If all goes according to plan, the 14,000-pound instrument will be released from the French-built rocket after a 26-minute ride into space.

Early birds  Night owls
Excited for the #NASAWebb launch

Fueling of the @Ariane5 rocket has begun ahead of a 7:20 AM ET (12:20 UTC) launch from Europe’s Spaceport in Kourou, French Guiana. Live coverage starts at 6 am ET (11:00 UTC). #UnfoldTheUniverse https://t.co/RyJmhSb3ML pic.twitter.com/hbBLhSIQlz

— NASA Webb Telescope (@NASAWebb) December 25, 2021

The Webb telescope will then take a month to coast to its destination in solar orbit roughly 1 million miles from Earth – about four times farther away than the moon. And Webb`s special orbital path will keep it in constant alignment with Earth as the planet and telescope circle the sun in tandem.

By comparison, Webb`s 30-year-old predecessor, the Hubble Space Telescope, orbits Earth itself from 340 miles away, passing in and out of the planet`s shadow every 90 minutes.

Named for the man who oversaw NASA through most of its formative decade of the 1960s, Webb is about 100 times more sensitive than Hubble and is expected to profoundly transform scientists` understanding of the universe and our place in it.

Webb mainly will view the cosmos in the infrared spectrum, allowing it to peer through clouds of gas and dust where stars are being born, while Hubble has operated primarily at optical and ultraviolet wavelengths.

COSMOLOGICAL HISTORY LESSON

The new telescope`s primary mirror – consisting of 18 hexagonal segments of gold-coated beryllium metal – also has a much bigger light-collecting area, enabling it to observe objects at greater distances, thus farther back into time, than Hubble or any other telescope.

That, astronomers say, will bring into view a glimpse of the cosmos never previously seen – dating to just 100 million years after the Big Bang, the theoretical flashpoint that set in motion the expansion of the observable universe an estimated 13.8 billion years ago.

Before the James Webb Space Telescope can #UnfoldTheUniverse, it has to literally unfold. Find mission updates at:

– @NASAWebb (play-by-play)
– https://t.co/sGBPzkchmf (milestones)
– @NASA (livestreams)
– https://t.co/ht9HRe1k1U (major news)

Timeline: https://t.co/aY8ybuWvnW pic.twitter.com/NhMkZiFWH6

— NASA (@NASA) December 21, 2021

Hubble`s view reached back to roughly 400 million years following the Big Bang, revealing objects that Webb will be able to re-examine with far greater clarity.

Aside from examining the formation of the earliest stars in the universe, astronomers are eager to study supermassive black holes believed to occupy the centres of distant galaxies.

Webb`s instruments also make it ideal to search for evidence of potentially life-supporting atmospheres around scores of newly documented exoplanets – celestial bodies orbiting distant stars – and to observe worlds much closer to home, such as Mars and Saturn`s icy moon Titan.

The telescope is an international collaboration led by NASA in partnership with the European and Canadian space agencies. Northrop Grumman Corp was the primary contractor. The Arianespace launch vehicle is part of the European contribution.

Webb was developed at a cost of $8.8 billion, with operational expenses projected to bring its total price tag to about $9.66 billion, far higher than planned when NASA was previously aiming for a 2011 launch.

 The latest weather forecast has arrived, and we are still GO for launch of #NASAWebb tomorrow, Dec. 25 at 7:20 am ET (12:20 UTC)! Watch live at https://t.co/E0iKHwugcn 

More info: https://t.co/uJ870FimeI

 : NASA/Chris Gunn, captured Dec 23. pic.twitter.com/i4dg9Nro6y

— NASA Webb Telescope (@NASAWebb) December 24, 2021

Astronomical operation of the telescope, to be managed from the Space Telescope Science Institute in Baltimore, is expected to begin in the summer of 2022, following about six months of alignment and calibration of Webb`s mirrors and instruments.

It is then that NASA expects to release the initial batch of images captured by Webb, though scientists are keeping mum about where precisely they plan to point the telescope first. Webb is designed to last up to 10 years.

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