Astronomer Frank Drake dies

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

Physicists have proven the importance of the mesoscale for quantum phase transitions

Low-temperature phase transitions in ferromagnets are characterized by destruction of the domain structure. In an article in Nature physicists write that for a theoretical description of the dynamics of such transitions, it is necessary to take into account not only microscopic, but also mesoscale symmetry. This discovery indicates the possibility of the existence of non-classical… Continue reading Physicists have proven the importance of the mesoscale for quantum phase transitions

Astronomers have limited the lifetime of the first “intra-Venus” asteroid

Astronomers presented the results of studies of the recently discovered asteroid Ailohchahnim, whose orbit lies entirely within the orbit of Venus. It turned out that the body has a diameter of 1.7 kilometers, it can be classified as a silicate asteroid and in 1-2 million years it can collide with the inner planets or even… Continue reading Astronomers have limited the lifetime of the first “intra-Venus” asteroid

The water level in the Nile allowed the Egyptians to transport stone to the site of the pyramids.

At the time of the construction of the Giza pyramids, the water level in the Nile allowed the filling of an artificial reservoir near the construction site so that the Egyptians could transport materials from the quarries directly to the construction site. This was confirmed by scientists from Egypt, China and France, who examined sediment… Continue reading The water level in the Nile allowed the Egyptians to transport stone to the site of the pyramids.

Oscillations of water droplets on the ISS improve understanding of wetting

American physicists studied the natural vibrations of water droplets on hydrophobic substrates in microgravity conditions. To do this, they sent the necessary materials and equipment to the ISS. By filming the vibrations of the drops on camera, the scientists were able to confirm that their previously developed theory of vibrations of free drops works well.… Continue reading Oscillations of water droplets on the ISS improve understanding of wetting

Scientists introduced bacteria into artificial urine and obtained phosphate stones

Polish physicists and chemists modeled the formation of phosphate kidney stones using artificial urine and uropathogenic bacteria. Experiments in vitro in combination with computer modeling showed that the region of optimal pH values ​​(pH-optimum) for the formation of struvite, a component of phosphate stones, lies in the range of 8–9, shifting to the neutral side… Continue reading Scientists introduced bacteria into artificial urine and obtained phosphate stones

Machine learning predicts the thickness of lead's neutron skin

Physicists have calculated the thickness of the neutron shell in the core of the lead-208 isotope – it is in the range from 0.14 to 0.20 femtometers. To do this, scientists combined calculations from first principles, statistical methods and machine learning. This scheme works faster than direct simulations and in the future it can be… Continue reading Machine learning predicts the thickness of lead's neutron skin

Physicists saw Rabi oscillations using extreme ultraviolet light

European physicists have reported the observation of characteristic doublets in the spectra of electrons knocked out of helium atoms by coherent light in the extreme ultraviolet range. The result obtained indicates the occurrence of Rabi oscillations in atoms. The shape and position of the doublets could be theoretically reproduced only after taking into account the… Continue reading Physicists saw Rabi oscillations using extreme ultraviolet light

Quantum walks of atoms helped to search with the oracle

American physicists have experimentally realized quantum walks of neutral strontium-88 atoms in the cells of a two-dimensional optical lattice. The distribution and expansion of the atomic wave function in their work turned out to be in good agreement with the simple model up to a region of a hundred nodes. The scientists also demonstrated how… Continue reading Quantum walks of atoms helped to search with the oracle

Half of the cytoplasm was taken from a living cell and its transcript was sequenced

Swiss scientists have proposed and developed a method that allows them to decipher the transcriptome of individual cells without killing them. To do this, they performed a biopsy of the cytoplasm and sequenced the resulting genetic material. Scientists have used this technique to separate different types of morphologically similar cells and describe how the expression… Continue reading Half of the cytoplasm was taken from a living cell and its transcript was sequenced