NASA’s James Webb Space Telescope has completed its major deployments, including its large primary mirror. This achievement paves the way for upcoming operations, such as aligning the telescope’s optics and calibrating its instruments, essential for its mission to explore cosmic phenomena across the universe.
NASA’s James Webb Space Telescope team fully deployed its 21-foot (6.4-meter), gold-coated primary mirror, successfully completing the final stage of all major spacecraft deployments to prepare for science operations.
A joint effort with the European Space Agency (ESA) and Canadian Space Agency, the Webb mission will explore every phase of cosmic history – from within our solar system to the most distant observable galaxies in the early universe.
“Today, NASA achieved another engineering milestone decades in the making. While the journey is not complete, I join the Webb team in breathing a little easier and imagining the future breakthroughs bound to inspire the world,” said NASA Administrator Bill Nelson. “The James Webb Space Telescope is an unprecedented mission that is on the precipice of seeing the light from the first galaxies and discovering the mysteries of our universe. Each feat already achieved and future accomplishment is a testament to the thousands of innovators who poured their life’s passion into this mission.”
The two wings of Webb’s primary mirror had been folded to fit inside the nose cone of an Arianespace Ariane 5 rocket prior to launch. After more than a week of other critical spacecraft deployments, the Webb team began remotely unfolding the hexagonal segments of the primary mirror, the largest ever launched into space. This was a multi-day process, with the first side deployed on January 7 and the second on January 8.
Mission Operations Center ground control at the Space Telescope Science Institute in Baltimore began deploying the second side panel of the mirror at 8:53 a.m. EST. Once it extended and latched into position at 1:17 p.m. EST, the team declared all major deployments successfully completed.
The world’s largest and most complex space science telescope will now begin moving its 18 primary mirror segments to align the telescope optics. The ground team will command 126 actuators on the backsides of the segments to flex each mirror – an alignment that will take months to complete. Then the team will calibrate the science instruments prior to delivering Webb’s first images this summer.
“I am so proud of the team – spanning continents and decades – that delivered this first-of-its-kind achievement,” said Thomas Zurbuchen, associate administrator for the Science Mission Directorate in NASA Headquarters in Washington. “Webb’s successful deployment exemplifies the best of what NASA has to offer: the willingness to attempt bold and challenging things in the name of discoveries still unknown.”
Soon, Webb will also undergo a third mid-course correction burn – one of three planned to place the telescope precisely in orbit around the second Lagrange point, commonly known as L2, nearly 1 million miles from Earth. This is Webb’s final orbital position, where its sunshield will protect it from light from the Sun, Earth, and Moon that could interfere with observations of infrared light. Webb is designed to peer back over 13.5 billion years to capture infrared light from celestial objects, with much higher resolution than ever before, and to study our own solar system as well as distant worlds.
“The successful completion of all of the Webb Space Telescope’s deployments is historic,” said Gregory L. Robinson, Webb program director at NASA Headquarters. “This is the first time a NASA-led mission has ever attempted to complete a complex sequence to unfold an observatory in space – a remarkable feat for our team, NASA, and the world.”
NASA’s Science Mission Directorate oversees the mission. NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the project for the agency and oversees the Space Telescope Science Institute, Northrop Grumman, and other mission partners. In addition to Goddard, several NASA centers contributed to the project, including Johnson Space Center in Houston, the Jet Propulsion Laboratory in Pasadena, Marshall Space Flight Center in Huntsville, Alabama, Ames Research Center in Silicon Valley, and others.
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5 Comments
I want to know after the Webb Telescope is set-up and ready to go. What is the first thing NASA wants to point the telescope at and why?
When one considers the complexity of the device along with the length of time its development, manufacture and actual deployment took, progress so far is just short of miraculous. The failure of only one small element of the process could have easily doomed the project to an ignominious failure.
Science and engineering rock!
Congrats to NASA for the successful launching of the James Webb Telescope, this proves that it is possible for the one who dares.
What I, as an interested amateur, would like to know is about a blurb that I read some time ago. There was a galaxy outside our universe that was inadvertently seen that was 32 billion light years away. That is impossible since our universe is +/- 13.8 billion years old. I think that would imply a different dimension. Probably a non-starter and maybe it is so naive as to be disregarded. But, if it is true it pretty much challenges everything we know.
All very informative but where is the meat?