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NASA Moves Towards Sunscreen Webb Space Telescope Deployment

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NASA Moves Towards Sunscreen Webb Space Telescope Deployment

Engineers activate the file James Webb Space Telescope Upgrade your power system to better cope with the real-world space environment, and chill the engines a little more than expected before proceeding with the final deployment of the observatory’s critical solar canopy on Monday.

Squeezing five thin layers of the sun canopy, gently pulling them together with motor-driven cables running through multiple coils, will likely take three days, said Bill Ochs, NASA’s project manager. But by Monday evening, three of the five layers were already in shape, and the last two were waiting for a puff on Tuesday.

a spread the cup For a long time it was considered one of the More difficult obstaclesbut “I don’t expect drama,” Ohs said.

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A five-layer sun visor for the James Webb Space Telescope seen during testing at the Northrop Grumman manufacturing facility in Redondo Beach, California.

NASA

“I always tell people that the best cure for surgery is boredom,” he said. “And that’s what we hope for the next three days. I think we can all breathe a sigh of relief when we reach stress level 5. But I don’t expect drama. “

Internet and Most expensive science probe Was always released With a lot of fanfare on top of the European Space Agency’s Ariane 5 rocket on Christmas Day, it enters orbit around the Sun a million miles from Earth.

Designed to capture infrared light from the first stars and galaxies after the Big Bang, Webb is very complex. But in addition to the small growth issues common to all new spacecraft, Ochs said the $ 10 billion observatory is undergoing initial activation as planned.

“We’re still in the process of meeting them with a telescope,” he told reporters on a morning teleconference. “All satellites will always be slightly different in orbit from Earth, and it takes time to find out and understand their characteristics.

“This is a large part of what we did last week and we are still making great progress on our commissioning schedule.”

The telescope’s solar array was deployed at scheduled times after the spacewalk, two trajectory correction beams were performed, the high gain antenna was not stretched out and pointed towards Earth, and the two platforms holding the solar dome membranes were rotated in this position.

A retractable tower raised Webb’s main mirror and instruments three feet above the still folded sunscreen, providing extra space and insulation from the heat generated by the spacecraft’s electronics. Then a “pulse damper” was activated to neutralize the small forces transmitted by the solar wind.

After removing the protective covers, two overlapping arms appeared. Extension from solar roof platforms On New Years Eve, the Kapton membranes returned to their kite shape.

“Obviously, the levels of tension are the next big step we are taking,” Ochs said. “By the time we end tensions in all five grades, we will have retired somewhere between 70 and 75 percent of the 344 individual points of failure that were discussed before the appointment.”

He was referring to the number of non-redundant machines and mechanisms required for countless Webb deployments that have no backups if something goes wrong. They should all just work.

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An art print of the Webb telescope with its sun shadows and its entire optical system has been published.

NASA

Sunscreen is needed to block the heat from the sun, and the 21.3-foot-wide Webb main mirror and instruments have cooled to nearly minus 400 degrees, cooling enough to register the faint infrared light of early stars and galaxies that ignites after Big Bright.

To reach extremely low temperatures, each layer must be stretched using motorized cables that run through several rolls, a process that also lifts and separates the films to allow thermal gaps to dissipate.

That latest stress was taken off over the weekend to give engineers a break from a busy first week of deployment and then evaluate the performance of Webb’s five-panel solar panel and its battery system.

Ultimately, factory settings governing solar panel production needed to be adjusted to reflect the actual temperatures Webb experiences in space. At the same time, the telescope was reoriented slightly to cool the six motors needed to tighten the visor layers.

“Everything is fine and working fine now,” said Amy Lo, a systems engineer at Webb for a major contractor Northrop Grumman. “The observatory was never in danger and we never really needed electricity. … Rebalancing the matrix gives us a certain margin (against) the expected increase in energy that we will need in the future. “

As for the engines, Luo said they never went out of range, they were just a little warmer than ideal. And for safety reasons, Webb was rerouted on Sunday to improve cooling, and “we now have a lot of temperature headroom.”

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Apple unveils data protection tool after Pegasus scandal

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Apple unveils data protection tool after Pegasus scandal

Apple will offer a data protection tool for journalists and activists in the fall, after the Pegasus case revealed the technical capabilities of some spyware.

Lockdown mode is “extreme optional protection for a small number of users whose digital security is at serious risk,” Apple said in a statement released on Wednesday.

These are people “who could be the target of highly sophisticated attacks carried out by the programs of the NSO Group and other hired companies that develop computer spyware on behalf of governments,” the California-based conglomerate specified. In September, Apple had to urgently fix a vulnerability that Israeli company NSO Group’s Pegasus program was able to use to infect iPhone devices without requiring users to click on intercepted links or buttons. answer’. press’.

The new option allows users to fully protect numerous services and content on their device, including attachments. It will also no longer be possible to connect a computer via a cable to an iPhone if it is locked.

Apple has also expanded its cybersecurity researcher program to offer up to $2 million to hackers who uncover flaws in Lockdown.

A year ago, an international media collective reported that Pegasus allowed it to spy on a number of journalists, activists, businessmen and politicians from several countries, including French President Emmanuel Macron.

The NSO group has repeatedly stated that its technology allows states to save lives by tracking, for example, pedophiles and terrorists.

But Apple, which has built its success on an excellent reputation for security and privacy, filed a complaint against the Israeli company in November.

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He accused her of being responsible for the “malicious acts” of some of her clients, such as governments.

“These are immoral mercenaries of the 21st century who have created state-of-the-art cyber-surveillance machines that incite egregious and routine abuses,” lawyers for the American group said in a complaint at the time.

Two weeks ago, Google condemned Italian spyware that was used to hack into smartphones to spy on users in Italy and Kazakhstan.

“These societies facilitate the proliferation of dangerous piracy tools and arm governments that otherwise would not be able to develop these skills,” Apple said.

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Fall Guys passes 50 million player mark 2 weeks after going free-to-play

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Fall Guys passes 50 million player mark 2 weeks after going free-to-play

autumn boys

The game has been free-to-play for all platforms since June.

Fall Guys passes 50 million player mark 2 weeks after going free-to-play
© Playback/mediatonicsFall Guys passes 50 million player mark 2 weeks after going free-to-play

This Wednesday (6) official profile autumn boys it turned out that the game managed to pass the 50 million player mark in just 2 weeks after game stay free on all platforms.

On June 21st, Fall Guys announced a Free for All season that saw the game become free-to-play and much more popular than it has been so far. At the same time, the game reached the mark of 50 million players, including PlayStation, Nintendo, Xbox and Epic Games Store.

Now it’s also cross-playable, so you can play with your friends regardless of their consoles. As a reminder, the game continues with several special skins that can be obtained with crowns or coins obtained in matches, which can also be purchased in the store. An example is the new skin Chapolin Coloradowhich goes on sale July 9th.

As a reminder, Fall Guys is free to play on PlayStation 4, PlayStation 5, Nintendo Switch, Xbox One, Xbox Series X|S, and PC via the Epic Games Store. The game has a system for buying cosmetic items that do not change the gameplay.

See also  NASA Launches James Webb Super Telescope Successfully
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Whatsapp will let you hide your online status

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Whatsapp will let you hide your online status

Whatsapp will allow you to hide your “online” status in stealth mode. The news came through the WABetaInfo website, which says that the developers of the Meta instant messaging app are developing features to hide online status and edit text messages. An update with these features is still in beta and has been seen in the test version. whatsapp for iOS.

The reason for hiding online status can vary, as everyone has different reasons for wanting this functionality. For example, there may be WhatsApp users who do not want to be disturbed by other people at a time when they need to concentrate, but we may also have cases where some contact is stalking, be it an acquaintance or a business person. . WhatsApp is now finally listening to its users and will soon let you choose who can see when you’re online in the app. Check out the image below to see a screenshot demonstrating this feature.


Screenshot of the WhatsApp online status hiding feature. Source: WABetaInfo

Note that in the image above there are options to customize who can see the “online” status when using the app. It is also possible to set hide “for everyone”, hide for “contacts”, hide for “contacts except…” and hide “for no one”.

Launch and availability

Hide online status feature in WhatsApp was only released for the beta version of the iOS app, but in the future this feature will be added to other platforms, including the beta version of WhatsApp for android and a beta version of WhatsApp for desktop. However, it is not yet known exactly when the functionality will become available to everyone.

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