x

Science

Space Telescope’s “Golden Eye” Opens, Last Major Hurdle

January 9, 2022

CAPE CANAVERAL, Fla. — NASA’s new space telescope opened its huge, gold-plated, flower-shaped mirror Saturday, the final step in the observatory’s dramatic unfurling.

The last portion of the 21-foot (6.5-meter) mirror swung into place at flight controllers’ command, completing the unfolding of the James Webb Space Telescope.

“I’m emotional about it. What an amazing milestone. We see that beautiful pattern out there in the sky now,” said Thomas Zurbuchen, chief of NASA’s science missions.

More powerful than the Hubble Space Telescope, the $10 billion 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 largest and most sensitive mirror ever launched — its “golden eye,” as scientists call it.

Webb is so big that it had to be folded orgami-style to fit in the rocket that soared from South America two weeks ago. The riskiest operation occurred earlier in the week, when the tennis court-size sunshield unfurled, providing subzero shade for the mirror and infrared detectors.

Flight controllers in Baltimore began opening the primary mirror Friday, unfolding the left side like a drop-leaf table. The mood was even more upbeat Saturday, with peppy music filling the control room as the right side snapped into place. After applauding, the controllers immediately got back to work, latching everything down. They jumped to their feet, exchanged high-fives and cheered from behind masks when the operation was finally complete 2 1/2 hours later, doing their best to remain socially distant because of the global surge in COVID-19 cases.

“We have a deployed telescope on orbit, a magnificent telescope the likes of which the world has never seen,” Zurbuchen said, congratulating the team. “So how does it feel to make history, everybody? You just did it.”

His counterpart at the European Space Agency, astronomer Antonella Nota, noted that after years of preparation, the team made everything look “so amazingly easy.”

“This is the moment we have been waiting for, for so long,” she said.

Webb’s main mirror is made of beryllium, a lightweight yet sturdy and cold-resistant metal. Each of its 18 segments is coated with an ultra thin layer of gold, highly reflective of infrared light. The hexagonal, coffee table-size segments must be adjusted in the weeks ahead so they can focus as one on stars, galaxies and alien worlds that might hold atmospheric signs of life.

“It’s like we have 18 mirrors that are right now little prima donnas all doing their own thing, singing their own tune in whatever key they’re in, and we have to make them work like a chorus and that is a methodical, laborious process,” operations project scientist Jane Rigby told reporters.

Webb should reach its destination 1 million miles (1.6 million kilometers) away in another two weeks; it’s already more than 667,000 miles (1 million kilometers) from Earth since its Christmas Day launch. If all continues to go well, science observations will begin this summer. Astronomers hope to peer back to within 100 million years of the universe-forming Big Bang, closer than Hubble has achieved.

Project manager Bill Ochs stressed the team isn’t letting its guard down, despite the unprecedented successes of the past two weeks.

“It’s not downhill from here. It’s all kind of a level playing field,” he said.

 

RELATED

NEW YORK — Three studies released Friday offered more evidence that COVID-19 vaccines are standing up to the omicron variant, at least among people who received booster shots.

Top Stories

Church

BOSTON – The Holy Synod of the Patriarchate of Alexandria in its recent meeting dealt with the ecclesiastical coup perpetrated by the Patriarchate of Moscow in its canonical jurisdiction, calling it an “immoral invasion and intrusion.

Church

NEW YORK - Some 21 years after it was destroyed in the September 11, 2001 terrorist attacks in the United States that brought down the Twin Towers in New York City, the new St Nicholas Greek Orthodox Church rising in its place is among the most eagerly awaited architectural openings of 2022.

Events

STATEN ISLAND, NY – For yet another year, the community of Holy Trinity-St Nicholas in Staten Island honored couples celebrating 50+ years of marriage with a modest ceremony held at the church immediately following the Divine Liturgy on January 16.

Video

SNF’s Health Initiative Will Support Child and Adolescent Mental Health

ATHENS - When we think about childhood injuries, we usually think of scratches, a few stitches, maybe even a broken bone.

Enter your email address to subscribe

Provide your email address to subscribe. For e.g. abc@xyz.com

You may unsubscribe at any time using the link in our newsletter.