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After lettuce, astronauts could grow beans in space in 2021. Pixabay

Ahead of its August launch, NASA’s Parker Solar Probe — the mission aiming to get closest to the Sun than ever by any human-made object — has got its “revolutionary” heat shield permanently attached to the spacecraft, the US space agency said.

The probe’s heat shield — called the Thermal Protection System, or TPS — was reinstalled on the spacecraft on June 27, NASA said in a statement on Thursday.


The reinstallation of the heat shield — which was briefly attached to the spacecraft during testing in the autumn of 2017 — marks the first time in months that Parker Solar Probe has been fully integrated.

A mission 60 years in the making, Parker Solar Probe will make a historic journey to the Sun’s corona, a region of the solar atmosphere.

With the help of its heat shield, the spacecraft’s orbit will carry it to within four million miles of the Sun’s fiercely hot surface, where it will collect data about the inner workings of the corona.


Representational image. (IANS)

The eight-foot-diameter heat shield will safeguard everything within its umbra, the shadow it casts on the spacecraft, NASA said.

At Parker Solar Probe’s closest approach to the Sun, temperatures on the heat shield will reach nearly 1,371 degrees Celsius, but the spacecraft and its instruments will be kept at a relatively comfortable temperature of about 29.4 degrees Celsius.

The heat shield is made of two panels of superheated carbon-carbon composite sandwiching a lightweight 4.5-inch-thick carbon foam core.

Also Read: NASA to Soon Start Testing ‘quiet’ Supersonic Flights over Texas

The Sun-facing side of the heat shield is also sprayed with a specially formulated white coating to reflect as much of the Sun’s energy away from the spacecraft as possible.

Because Parker Solar Probe travels so fast — 69,2018 km per hour at its closest approach to the Sun, fast enough to travel from Philadelphia to Washington, DC, in about one second — the shield and spacecraft have to be light to achieve the needed orbit.

The heat shield itself weighs only about 72.5 kg, NASA said. (IANS)


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Photo by Brian Kostiuk on Unsplash

Traditional players are very strong in the consumer laptop market.

By Md Waquar Haider

When popular smartphone brands like Xiaomi and realme entered the laptop market in India last year, they were expected to shake the existing giants, specifically under the Rs 50,000 category. However, chip shortage and supply crunch have somewhat dented their plans to make a significant mark to date. According to industry experts, the issue with smartphone makers entering the laptop category is two-fold. The first one is a massive supply crunch in the laptop component market and only big brands are able to get volume and supplies.

The other factor is that the traditional players are very strong in the consumer laptop market. Top 3 players control more than 70 per cent of the market and strong portfolio, distribution, and channel reach as well as brand marketing has helped them massively. "New brands can surely make a dent in the consumer laptop market but are challenged by supply issues right now. Watch out for them in 2022 as and when supply situation eases up," Navkendar Singh, Research Director, Client Devices & IPDS, IDC India told IANS.

Dominated by HP Inc, Lenovo and Dell, the traditional PC market (inclusive of desktops, notebooks, and workstations) in India continued to be robust as the shipments grew by 50.5 per cent year-over-year (YoY) in the second quarter (Q2), according to IDC. Notebook PCs continue to hold more than three-fourth share in the overall category and grew 49.9 per cent YoY in 2Q21, reporting a fourth consecutive quarter with over 2 million units. Desktops also indicated a recovery as shipments grew 52.3 per cent YoY after recording the lowest shipments of the decade in 2Q20.

According to Prabhu Ram, Head, Industry Intelligence Group, CMR, driven by the pandemic and the associated accelerated pivot to remote work, learn and unwind culture, PCs have been witnessing heightened demand. "Despite the current supply chain constraints, PCs are here to stay in the new never normal. In the run-up to the festive season, established PC market leaders will continue to leverage their brand salience and gain market share," Ram told IANS.

a computer chip close up According to industry experts, the issue with smartphone makers entering the laptop category is two-fold. | Photo by Manuel on Unsplash

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