Nonlinearity of quantum dot waveguide helps entangle photons

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

Astronomers have not found a dense atmosphere near a hot super-Earth

Astronomers, thanks to the TESS and Spitzer telescopes, have determined that the hot super-Earth GJ 1252b is not capable of having a dense atmosphere, even with a high initial pressure at the surface of the planet or a high carbon content in the magma. Instead, it may be surrounded only by a tenuous exosphere, replenished… Continue reading Astronomers have not found a dense atmosphere near a hot super-Earth

Burial of a woman with a 1,400-year-old folding chair unearthed in Germany

Archaeologists have discovered the burial of a woman in Middle Franconia who died at approximately 40–50 years of age around 600 AD. Among her accompanying equipment was a folding iron chair. This is only the second such discovery from the early Middle Ages made in Germany. This was reported in a press release from the… Continue reading Burial of a woman with a 1,400-year-old folding chair unearthed in Germany

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

Playing music in childhood has been linked to long-term improvements in cognitive abilities.

Playing a musical instrument in childhood and adolescence is associated with improved cognitive skills in later life, British researchers have found. The positive effect persisted even after adjusting for several factors, such as childhood environment. The study was published in Psychological Science. Developed cognitive skills can influence academic and professional achievements, as well as health.… Continue reading Playing music in childhood has been linked to long-term improvements in cognitive abilities.

Astronomers have found a record-breaking planetary nebula

Astronomers using ground-based telescopes have confirmed the discovery of a new planetary nebula in the Milky Way, which is the remnant of a star 2.8 times more massive than the Sun. The kinematic age of the nebula turned out to be record-breaking and amounted to 78 thousand years; it is part of an open star… Continue reading Astronomers have found a record-breaking planetary nebula

An antilaser with a degenerate cavity turned out to be an excellent absorber

Physicists combined the idea of ​​a coherent ideal absorber (antilaser) with the concept of a degenerate resonator. The constructed optical system effectively absorbs light incident on it from various angles, and its operation has proven to be resistant to typical interference in optical communication lines. The study was published in Science. Absorption is an important… Continue reading An antilaser with a degenerate cavity turned out to be an excellent absorber

Sahelanthropus was again allowed to walk on two legs

Paleontologists examined femur and ulna bones found more than 20 years ago in Chad. They concluded that the remains belonged to Sahelanthropus (Sahelanthropus tchadensis), who lived about seven million years ago. According to the researchers, the individual could move on the ground on two legs, but also climbed trees. This was reported in an article… Continue reading Sahelanthropus was again allowed to walk on two legs

The Gemini telescope reduced the mass of the heaviest known star

Using the ground-based Gemini South telescope, astronomers have obtained a record-breakingly detailed image of the central zone of the R136 cluster, where the heaviest known star, R136a1, is located. Observational data made it possible to clarify the mass of the most massive stars in the cluster, which turned out to be significantly less than previous… Continue reading The Gemini telescope reduced the mass of the heaviest known star

The most expensive drug in the world is a new therapy for beta thalassemia. One injection costs $2.8 million

The United States has approved gene therapy for beta thalassemia, an inherited blood disease. The developer of the drug, Bluebird bio, claims that one injection is enough to, if not cure, then significantly improve the patient’s condition. But such an injection would cost $2.8 million. This is 700 thousand dollars more expensive than the Zolgensma… Continue reading The most expensive drug in the world is a new therapy for beta thalassemia. One injection costs $2.8 million