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James Webb telescope for the first time studied the atmosphere James Webb telescope for the first time studied the atmosphere

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James Webb telescope for the first time studied the atmosphere of an exoplanet in detail

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According to the press service of the Max Planck Institute for Astronomy, the James Webb telescope was able to study the exoplanet’s atmosphere in more detail than ever before. According to scientists, this is a new level of observation of exoplanets, which in the future will make it possible to determine the presence of extraterrestrial life on them. The telescope analyzed the atmosphere of the gas giant WASP-39b. It resembles Saturn in the solar system, revolves around a star in the constellation Virgo and is located not far from it – about one eighth of the distance from Mercury to the Sun. This star belongs to the class G, like our Sun, but it is slightly smaller than it. The entire system is located at a distance of about 700 light years from Earth. Back in August of this year, it was reported that carbon dioxide was detected in the atmosphere of WASP-39b, and now there are much more detailed data on the composition of the exoplanet’s atmosphere.

James Webb telescope for the first time studied the atmosphere of an exoplanet in detail

When observing exoplanets, the so-called transit method is used: the light of a star, when a planet passes in front of it, is partially absorbed by its atmosphere, and only after that it is received by instruments of the earth’s observatory. Each chemical element corresponds to a certain emission spectrum, which allows us to determine which elements are contained in the exoplanet’s atmosphere. James Webb detected sulfur dioxide in WASP-39b’s atmosphere, the first time such a compound has been found in the atmosphere of an exoplanet. Scientists note that sulfur dioxide molecules, similar to ozone in the Earth’s atmosphere, are formed when the exoplanet’s upper atmosphere interacts with high-energy photons from the mother star. In addition, the information obtained allows us to draw conclusions about the formation of the planet. Thus, the ratio of carbon to oxygen, potassium to oxygen, and sulfur to hydrogen indicates a history of formation when smaller precursor bodies collided with each other and merged to create the current large planet. Astronomers note that, based on these data, WASP-39b originally formed much further from its star than it is now. The composition of the exoplanet’s cloud cover has also become clear, and this is not water vapor, as on Earth, but sulfides and silicates. At the same time, the clouds are scattered, and not a uniform cover over the entire planet.

New observations from the James Webb telescope have allowed testing of methods that will need to be used to search for life on other planets, scientists say. Although, this is likely to be done by one of James Webb’s successors, they say. Such observations, in the future, will make it possible to determine the composition of the atmosphere of an exoplanet so accurately as to be able to immediately say whether there is life on it or not.

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Software

Now Apple Watch Ultra can be used to the fullest. Oceanic+ diving app now available

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Now Apple Watch Ultra can be used to the fullest

Despite the fact that the Apple Watch Ultra has been on sale for some time, only now the watch has received one of the important applications.

Now Apple Watch Ultra can be used to the fullest.  Oceanic+ diving app now available

Apple today announced the launch of Oceanic+. It is this application that actually turns an Apple watch into a diving computer. Since the watch can be submerged to a depth of 40 meters, this is not just marketing.

Interestingly, Apple did not develop the application itself. Even in the press release, the company says that it was created together with Huish Outdoors, which specializes in diving products.

Huish Outdoors specialists note that one of their main tasks was to make the software intuitive and convenient, since diving computers are usually very specific in this matter.

Oceanic+, among other things, allows you, for example, to plan your dive by specifying time, depth and other parameters in advance. The application is able, based on the input data, to calculate the no-decompression time, an indicator used to determine the time limit for a diver at a certain depth. The planner also takes into account diving conditions, including tides, water temperature, and even up-to-date information from the diving community, such as visibility and current strength.

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Electric Cars

Tesla wants to update Model 3, but primarily to reduce production costs

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Tesla wants to update Model 3 but primarily to reduce

Tesla is going to significantly change its bestseller Model 3. But we are talking about classic restyling.

Tesla wants to update Model 3, but primarily to reduce production costs

The project, codenamed Highland, is designed primarily to reduce manufacturing costs, but at the same time, Tesla also wants to focus on features that consumers love.

As one of the directions, the Reuters resource calls the reduction in the number of components and the complexity of the interior of the Model 3. Changes in the design may also take place, but there is no exact data yet. Recall that the Model 3 has been in production for five years, and automakers usually resort to restyling or at least facelift even earlier.

The updated Model 3 will be produced in Shanghai from the third quarter of 2023. Also, production can be established in California.

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Phones

For iPhone 15, Apple will purchase the latest Sony sensors, which have no analogues on the market

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For iPhone 15 Apple will purchase the latest Sony sensors

Sony will supply its state-of-the-art image sensors to Apple, which will be used in the iPhone 15 line of smartphones.

For iPhone 15, Apple will purchase the latest Sony sensors, which have no analogues on the market

The new Sony Semiconductor Solutions sensor has roughly doubled the saturation signal per pixel compared to conventional image sensors. This matches the description of the new technology that Sony talked about last year.

This is the industry’s first multi-layer CMOS sensor. While the photodiodes and pixel transistors of conventional CMOS sensors are formed in the same layer, they are in different layers in the new sensor. This allows you to expand the dynamic range, increase the photosensitivity and reduce the noise level.

Apparently, this technology has not yet found application in any of Sony’s sensors. Whether Apple will be the first to receive such sensors is unknown. It is also unclear whether they will be used in all iPhone 15 or only in older models. Given the trends of recent years, as well as all the rumors about Apple’s intention to separate younger and older iPhones more strongly, it is likely that only older models will get new sensors, or even exclusively iPhone 15 Ultra.

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