
News
A peaceful atom is indispensable in space. NASA wins $15 million contracts to build three nuclear reactors for lunar base
NASA is turning to nuclear power to power its lunar base. The US space agency has awarded $15 million in contracts to develop three small 40kW nuclear reactors to be tested on the surface of the moon by 2030.
While spacecraft may well rely on solar panels as one of their main sources of energy, such solutions are not suitable for lunar or Martian bases. Thus, the problem in creating a lunar base is not only that it is corny to send cargo to it ($ 100,000 for 450 grams), but also that the solar panels would have to work in extreme conditions: 14 days would have to withstand the highest temperatures (120°C in the shade) and another 14 days of extreme cold (-130°C). It turns out that all the energy (and maybe more) received during the first 14 days would go to heating the solar panels in the next two weeks.
Therefore, the most practical option for the mission is a compact and lightweight source using fuel with a high energy density. In other words, nuclear.
The concept is not new. Nuclear power has been used in space since the 1960s, when the USSR placed reactors in Earth orbit to power radar satellites, and instruments powered by radioactive isotopes were used on the Apollo lunar mission.
But the Artemis mission, which will culminate in the American base on the moon, requires a completely new nuclear system, scalable and with a long service life. It would also be nice if the reactors did not run on plutonium, which has supply problems.
Contracts under the Fission Surface Power project for the design of lunar reactors are awarded to Lockheed Martin, Westinghouse and IX, as well as their contractor companies. The contracts are valid for 12 months. The developments presented in the products of the performers will serve as the basis for the creation of serial nuclear reactors, which will later be placed not only on the Moon, but also on Mars.

News
Not all F-35 fighters show the detected defect. All Israeli aircraft have been tested

All IDF F-35I Adir multirole combat aircraft have been inspected and returned to missions. Flights were suspended after the emergence of information about a possible malfunction of the pilot’s ejection seat.
Concerns about malfunctioning ejection seats arose within the US military. The American side informed all F-35 operators abroad about these concerns, including the Israel Defense Forces Air Force.
Lockheed Martin, which is engaged in production, has published detailed instructions for conducting a technical check. It was recommended to pay special attention to the squib, after which the seat is pushed out of the cab. All Israeli planes were tested, no faults were found.
The Lockheed Martin press service said that the manufacturer is in constant contact with F-35 operators in the US and abroad, in an effort to ensure a high level of safety in the operation of aircraft of this type, and assists in technical inspections.
Earlier it was reported that two of the six F-35 aircraft delivered to the Danish Air Force by the American company Lockheed Martin had malfunctions in the catapult mechanism.
News
Cleans, cools and warms up. Xiaomi Mijia Desktop Drinking Machine Happy Edition is offered for 220 dllar

Xiaomi has introduced the Xiaomi Mijia Desktop Drinking Machine Happy Edition Purified Cold and Hot Water Dispenser, which is offered in China for $220.
Xiaomi Mijia Desktop Drinking Machine Happy Edition has a small size and weight, the device uses six-stage filtration based on reverse osmosis. The water temperature can be precisely adjusted in 1°C increments, while the water temperature and cup volume can be adjusted from your smartphone or directly on the device.
The volume of the water tank is 4 liters. Two filter elements are replaced once a year, and their price (total) is about $50.
News
The biggest presentation of the year: Xiaomi will release 30 new devices this week

Earlier, the founder, chairman and CEO of Xiaomi, Lei Jun, confirmed that he will hold a presentation of new devices this week. But only now it became known that during the event 30 new devices will be announced and released. Not all will be shown from the stage, some will simply go on sale right away.
We already know that Lei Jun is due to announce the Redmi K50 Extreme Edition, Xiaomi MIX Fold 2, Xiaomi Tablet 5 Pro with a 12.4-inch screen, as well as the new Xiaomi Buds 4 Pro headset. Who knows, maybe Xiaomi will please with the announcement of the global version of Xiaomi 12S Ultra, although the company has previously stated. that this smartphone will remain exclusive to China.
In addition, Xiaomi launched the Xiaomi 816 sale (similar to the June 618). From August 8, the Chinese manufacturer offers to place pre-orders for new devices, and the peak of the sale will be on August 16.
The announcement of new products is expected on August 11, that is, the day after tomorrow.
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