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Most complicated challenge in space begins, unfolding $10 bn James Webb Telescope

Published

3 years ago

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Most complicated challenge in space begins, unfolding bn James Webb Telescope

On the second day after the James Webb telescope passed the height of the moon, the engineers embarked on the most challenging task of the future-deploying the sun visor. As the observatory begins operation at the end of January, the five-layer shield will protect the equipment on the telescope from the heat generated by the sun, moon, and earth.

The mission was successfully deployed. The front and rear consisted of five protective covers about the size of three tennis courts. They were made of very thin Kapton material, about one to two thousandths of an inch thick, and only included 140 release mechanisms, 70 hinge components, 8 deployment motors, bearings, springs, gears, 400 pulleys, and a total length of 1,312 feet of cables. All of these must work perfectly to deploy the shield.

The engineers stated that for deployment, the 107 sunshade release mechanisms need to be fired according to the prompts to fully open the sunshade. That is 107.

“The unfolding of the pallet marks the beginning of the deployment of Weber’s main structures and the beginning of the sun visor deployment phase, which will last at least until this Sunday,” NASA said. Among them are Weber’s most unpredictable and complex tray structure component: sun visor. The tray contains five carefully folded sunshade films, as well as the cables, pulleys and release mechanisms that make up the Webb sunshade.

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NASA updated in its blog that although the actual movement of lowering the front pallet from the resting position to the unfolded position took only 20 minutes, and the lowering of the rear pallet took only 18 minutes, the entire process required several Hours, because dozens of additional steps are required.

“Deploying these structures includes closely monitoring the temperature, manipulating the observatory to provide the optimal temperature, turning on the heater to heat key components, activating the release mechanism, configuring the electronics and software, and finally locking the tray in place,” NASA said.

Complete News Source : INDIATODAY

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Nasa’s old map of Jupiter, which reminds many of dosa, has gone viral once more

Published

2 years ago

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May 25, 2022

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Nasa’s old map of Jupiter, which reminds many of dosa, has gone viral once more

Certain images or videos frequently resurface on the Internet, leaving people speechless. When those clips or pictures are shared again on one social media platform or another, they create a buzz. The National Aeronautics and Space Administration (Nasa) created and posted this image of a map of Jupiter online a few years ago. After being shared on Twitter, the image drew a lot of attention this time. And, as usual, the image made people think of dosa, a popular South Indian dish.

The image was shared by the Twitter account Latest in Space. “From the very bottom of Jupiter, I’m looking up. While tweeting the image, they wrote, “Seen by NASA Cassini.” The images from the Cassini spacecraft’s narrow-angle camera were used to create this out-of-this-world image, which is part of a coloured map series produced by the space agency.

The article was published a few days ago. The tweet has received nearly 20,000 likes since it was shared, and the number is growing. The tweet has been retweeted more than 2,000 times. Take a look at some of the comments to see how the image of Jupiter looks like dosa.

A Twitter user commented, “Looks like a designer dosa.” “When I rush to pick up a call, this is what happens to my dosa on the dosa pan,” one joked. “This is how my mother makes Dosa,” a third said. “Jupiter in the making,” wrote a fourth, along with a photo of someone preparing – you guessed it – dosa.

 

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