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The James Webb saga: A giant telescope grows in space

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2 years ago

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The James Webb saga: A giant telescope grows in space

Two weeks ago, the most powerful space observatory ever built roared into the sky, carrying the hopes and dreams of a generation of astronomers, encased in mirrors, wires, motors, cable latches and thin sheets of wicker plastic. fireworks. On Saturday, the observatory’s James Webb Space Telescope completed the final critical step by unfolding the last part of its golden hexagonal mirror.

Nearly three hours later, engineers issued an order to lock the mirrors into place, a step equivalent to its full deployment, according to NASA. It’s the latest in a series of delicate maneuvers that the space agency calls a “single point of failure” while accelerating in distant space. Now the telescope is almost ready to go into operation, although there are more tense moments ahead. “I’m excited about this,” NASA science chief Thomas Zubchen said of all the telescope’s mirrors finally snapping into place. “What an amazing milestone – that beautiful pattern we saw in the sky is now almost complete.”

Named after a former NASA administrator who oversaw the formative years of the Apollo program, the James Webb Space Telescope is 25 years old and cost $10 billion. Three times the size of the Hubble Space Telescope, it was designed to look deeper into the past than its famous predecessor to study the first stars and galaxies that appeared at dawn. Mike said the launch on the Ariane rocket on the morning of Dec. 25 was flawless — engineers say it saved enough maneuvering fuel to significantly extend the mission’s estimated 10-year lifespan, and possibly another 10. year. Menzel, mission systems engineer at NASA Goddard. But the telescope must make a one-month journey to reach a million miles high, well beyond the lunar orbit, known as L2, where the gravitational fields of Earth and the sun mix to create the conditions for a stable orbit around the sun. Because the primary mirror is 21 feet wide, the Webb telescope is too large to fit into the rocket, so the mirror is made in sections—18 gold-plated hexagons folded together—that must pop into place once the telescope is in space. Another challenge is that the telescope’s instruments must be sensitive to infrared or “thermal radiation,” a form of electromagnetic radiation invisible to the human eye.

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Gambhir acknowledges that his “sole regret in seven years of captaincy” is Suryakumar Yadav: “KKR failed to recognise his potential.”

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1 week ago

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May 13, 2024

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Gambhir acknowledges that his “sole regret in seven years of captaincy” is Suryakumar Yadav: “KKR failed to recognise his potential.”

Throughout his incredible career with the Mumbai Indians since 2018, Suryakumar Yadav has become a household name. He has established himself as a vital member of the batting lineup and is seen as the team’s future leader. He was able to establish himself in the Indian white-ball team and get to the top of the IC batting rankings in the format because to his valiant efforts at MI. But before he was let away, Suryakumar was a member of the Kolkata Knight Riders lineup from 2014 to 2017. When former captain Gautam Gambhir reflects on the two IPL titles won by KKR during that time, he named the star player from India his greatest regret.

KKR featured Suryakumar Yadav from 2014 to 2017.

In 2012, Suryakumar began his IPL career with the Mumbai Indians, appearing in just one match before being cut loose the following year. He was signed by KKR in 2014, and he won the championship in his first campaign there. The right-handed batter scored 608 runs in 54 games during his four-year tenure with the team, although the majority of those runs were scored as a lower middle order hitter.

In an interview with Sportskeeda on Monday, Gambhir said that his biggest regret as KKR captain is that he failed to recognise Suryakumar’s ability or his ideal batting position in the lineup.

Finding and showcasing the greatest potential is the responsibility of a leader. If there’s one thing I regret from my seven years as captain, it’s that neither I nor the squad were able to fully utilise Suryakumar Yadav. And combinations were the key to the cause. At No. 3, you may only play one person. As a leader, you also need to consider the other ten players in the starting lineup. Although he was just as excellent at No. 7, he would have been far more effective at No. 3, he said.

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Gambhir went on to praise Suruyakumar for being a team player, citing the reason behind his appointment as the team’s vice-captain in 2015.

He was a team player as well. A good player may be anyone, but becoming a team player takes skill. Playing him at No. 6 or 7 or benching him, he was constantly grinning and eager to contribute to the squad. He went on, “That’s why we named him vice captain.”

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