Space telescope’s ‘golden eye’ opens, last major hurdle


PTI, Jan 9, 2022, 10:39 AM IST

Image credit: NASA

Cape Canaveral: NASA’s new space telescope opened its huge, gold-plated, flower-shaped mirror on 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, NASA’s science missions chief.

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

Webb is so big that it had to be folded origami-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 sun shield 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.

This 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 days and weeks ahead so they can focus as one on stars, galaxies, and alien worlds that might hold atmospheric signs of life.

Webb should reach its destination 1 million miles (1.6 million kilometers) away in another two weeks. 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.

Udayavani is now on Telegram. Click here to join our channel and stay updated with the latest news.

Top News

BJP stages protest against Karnataka govt over Waqf properties row

Youth attempts suicide after being humiliated in public for wearing ripped jeans in Belthangady

India crawl to 51 for 4 after losing top-order

Nursing student suicide: Three students arrested in Kerala

Nadda’s letter to Kharge full of falsehoods: Cong

10 month baby gets new heart, new life

Actress Kasthuri released from jail, says ‘I thank those who made me raging storm’

Related Articles More

BTS2024: If India can make rocket sensors, it can also make car sensors, says ISRO chief Somanath

World COPD Day: Know your lung function

SpaceX successfully launches ISRO’s 4,700 kg communication satellite from US

As AI and megaplatforms take over, the hyperlinks that built the web may face extinction

Plastic waste could double by 2050, researchers find, suggest policies to address issue

MUST WATCH

Christmas Cake Fruit Mixing

DK Shivakumar

Rose Cultivation

Geethotsava

Naxal Operation


Latest Additions

BJP stages protest against Karnataka govt over Waqf properties row

US charges against Adani, 7 others could lead to arrest warrants, extradition bid: attorney

Youth attempts suicide after being humiliated in public for wearing ripped jeans in Belthangady

Baku climate talks: The ‘X’ factor that could determine future of Global South

Kerala HC denies bail to police officer accused of ‘raping’ minor Dalit girl

Thanks for visiting Udayavani

You seem to have an Ad Blocker on.
To continue reading, please turn it off or whitelist Udayavani.