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Webb space telescope launch delayed again after site incident

The $10-billion observatory will now be launched on 22 December after encountering a hitch as technicians tried to attach it to a launch vehicle adapter

In this file photo taken on November 5, 2021, the James Webb Space Telescope stands in the S5 Payload Preparation Facility at The Guiana Space Centre, Kourou, French Guiana, where it is being tested and verified ahead of a scheduled launch on December 18.  (AFP)

The launch of the James Webb Space Telescope, which astronomers hope will herald a new era of discovery, has been delayed until December 22 after an accident at its launch facility in French Guiana, US space agency NASA said Monday.

Technicians were preparing to attach the $10 billion observatory to a launch vehicle adapter, used to fix it to the upper stage of an Ariane 5 rocket.

Also read: James Webb Space Telescope could peer into hidden corners of the universe

"A sudden, unplanned release of a clamp band - which secures Webb to the launch vehicle adapter - caused a vibration throughout the observatory," the US space agency said in a blog post, adding that the incident occurred while operations were taking place "under Arianespace overall responsibility."

Arianespace is the French launch company contracted to launch the telescope.

A NASA-led team is now investigating how it happened and testing "to determine with certainty the incident did not damage any components." The space telescope was originally supposed to launch on December 18, so for now the delay is only a few days.

Researchers want to use the Webb space telescope, the largest and most powerful ever built, to look back in time over 13.5 billion years to see the first stars and galaxies that formed, a few hundred million years after the Big Bang.

A key feature is its ability to detect infrared, as by the time the light from the first objects reaches our telescopes, it has shifted toward the red end of the electromagnetic spectrum as a result of the universe's expansion. More importantly, another AFP report explains, scientists from 44 countries will be able to make use of the telescope, with proposals including using the infrared capabilities to penetrate the supermassive black holes at the center of galaxies, including our own.

According to a study published in The Astrophysical Journal last year, Webb will be able to reveal the host galaxies of some distant quasars despite their small size and obscuring dust. Quasars are some of the brightest objects in the universe, as per Nasa.

Computer simulations as part of this study showed that while the Hubble telescope can't see galaxies currently hidden by these quasars, the James Webb Telescope will be able to get past the glare and spot these hidden galaxies.

(With inputs from AFP)

Also read: Nasa's James Webb Space Telescope clears key pre-launch test

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