প্রকাশ: 09/01/2022
The James Webb Space Telescope has completed its
two-week-long deployment phase, unfolding its huge, gold-plated, flower-shaped
mirror panel as it readies to study every phase of cosmic history.
Engineering teams cheered back at the Space Telescope
Science Institute in Baltimore, Maryland as NASA announced on Twitter that the
final portion of the 6.5-meter (21-foot) mirror was deployed.
“I’m emotional about it – what an amazing milestone,” Thomas
Zurbuchen, a senior NASA engineer, said during the live video feed on Saturday
as stargazers worldwide celebrated.
“We see that beautiful pattern out there in the sky now.”
More powerful than the Hubble Space Telescope, the $10bn
Webb will scan the cosmos for light streaming from the first stars and galaxies
formed 13.7 billion years ago. To accomplish this, NASA had to outfit Webb with
the biggest and most sensitive mirror ever launched – its “golden eye”, as
scientists call it.
Because the telescope was too large to fit into a rocket’s
nose cone in its operational configuration, it was transported folded-up.
Unfurling has been a complex and challenging task – the most
daunting such project ever attempted, according to NASA.
In this photo released by NASA, James Webb Space Telescope
Project Manager Bill Ochs, left, and Commissioning Manager John Durning, right,
celebrate [Bill Ingalls/NASA via AFP]
The Webb blasted off in an Ariane 5 rocket from French
Guiana on December 25, and is heading to its orbital point, 1.5 million km (1
million miles) from Earth.
Though Webb will reach its space destination, known as the
second Lagrange point, in a matter of weeks, it still has about another five
and a half months of setup to go.
The next steps include aligning the telescope’s optics, and
calibrating its scientific instruments.
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