Neurodegeneration can occur more quickly if nerve cells lack retromer proteins, which are responsible for breaking down toxic tau protein. This conclusion was reached by scientists who observed genetically modified fruit flies that produced human tau protein in 39 neurons of the eye. Tau protein itself already caused the death of nerve cells, and the… Continue reading Poor protein utilization contributes to neurodegeneration
European physicists have studied in detail the interaction of single photons in a photonic crystal waveguide containing a quantum dot. They showed that by varying the duration of the pulses and their delay, it is possible to achieve varying degrees of nonlinearity, as well as control the degree of correlation of light quanta. The study… Continue reading Nonlinearity of quantum dot waveguide helps entangle photons
On Friday, September 2, 2022, at the age of 93, American astronomer Frank Drake, who became one of the pioneers of the search for radio signals from extraterrestrial civilizations, died. He is also one of the creators of the records for the Pioneer and Voyager probes and the Arecibo radio message, according to the SETI… Continue reading Astronomer Frank Drake dies
German physics teachers made a universal spectrometer in the Czerny-Turner scheme using LEGO constructors and scrap materials. The authors showed that it can be used to study the spectra of atomic emission, transmission, reflection and fluorescence. Reconfiguring the device for different tasks takes a few minutes, and the total cost of the device does not… Continue reading Spectrometer based on LEGO constructor will make studying physics cheaper
The Voyager 1 team solved the problem of sending anomalous telemetry that had been coming from the probe for several months. It turned out that the cause of the failure was a faulty on-board computer, which was mistakenly assigned the operation of sending data. The problem has now been fixed, according to NASA's website. Voyagers… Continue reading NASA has fixed a glitch in Voyager 1's telemetry sending system.
The Falcon 9 launch vehicle carrying the Danuri lunar probe, South Korea's first interplanetary spacecraft, launched from Cape Canaveral. The probe will operate in a lunar polar orbit for at least a year, studying the composition and structure of the Moon's surface, and will also look for ice deposits in the Moon's polar craters. The… Continue reading South Korea's first lunar probe, Danuri, launched aboard Falcon 9
The Al Amal Mars station team presented an animation of the dynamics of the ultraviolet glow of the Martian atmosphere, covering one Earth year. An increase in the brightness of the glow occurs due to increased activity of the Sun and a reduction in the distance between it and Mars, reported on the mission's Twitter… Continue reading The Arab station Al Amal showed the ultraviolet glow of the Martian atmosphere
Scientists have simulated the formation of a mineral complex found by the Curiosity rover in the rocks of Gale Crater and including the rare mineral tridymite. It turned out that their joint occurrence was best satisfied by the conditions of an explosive volcanic eruption, which was fed by acidic magma, followed by the deposition of… Continue reading Planetologists have found an explosive eruption of acidic magma in the ancient history of Mars
NASA has revised the mission configuration for the first return of Martian rock samples to Earth (MSR). The agency abandoned the rover that would deliver test tubes with samples to the MAV take-off rocket – the samples will be transported by the Perseverance rover, as well as two drone helicopters that will go to Mars… Continue reading Two helicopters were added to NASA's mission to deliver soil from Mars and a rover was removed.
NASA has postponed the launch of the VIPER rover to the south pole of the Moon from November 2023 to November 2024. The delay is due to the need for additional testing of the Griffin lunar module, which is being developed by the private company Astrobotic Technology, according to NASA's website. VIPER (Volatiles Investigating Polar… Continue reading NASA postpones the launch of the VIPER rover for a year