Physicists have reproduced the chirping effect at the Kukulcan Pyramid

Colombian physicists have reproduced the unusual acoustic effect observed at the Temple of Kukulcan, located on the Yucatan Peninsula in Mexico. The echo of hand clapping at the base of the pyramid resembles the chirping or chirping of a bird. Simulations showed that this effect occurs due to the addition of many waves reflected from… Continue reading Physicists have reproduced the chirping effect at the Kukulcan Pyramid

Simple details of mice's dreams deciphered by eye movements

Neuroscientists from the United States measured the activity of neurons in the anterodorsal nucleus of the thalamus in mice, which are involved in the control of head position, and compared them with eye movements during wakefulness and then during sleep. It turned out that the electrical activity and eye movements of sleeping and active animals… Continue reading Simple details of mice's dreams deciphered by eye movements

Embark taught an unmanned truck to present documents to police

The American company Embark showed tests of a system for interaction between an unmanned truck and the police. The car can recognize a police vehicle with flashing lights behind it and stop, and after the police officer approaches the truck, he can ask a remote operator for the code to the safe and retrieve documents… Continue reading Embark taught an unmanned truck to present documents to police

Sentinel-1B satellite ended orbit due to power supply failure

The European Space Agency has stopped operating its Sentinel-1B remote sensing satellite due to irreversible failure of the radar antenna power supply. The device operated in low-Earth orbit for more than 6 years, monitoring oceans, seas, human activities, and emergency situations, according to the ESA website. Sentinel-1B is one of two satellites launched into Earth… Continue reading Sentinel-1B satellite ended orbit due to power supply failure

Erythropoietin did not help newborns with cerebral hypoxia

Administration of erythropoietin to newborns with hypoxic-ischemic brain damage whose body temperature was artificially reduced did not reduce the risk of death or neurological complications compared with placebo. Authors of the work, published V The New England Journal of Medicinereported that neonates given erythropoietin were at greater risk of developing serious adverse events. Hypoxic-ischemic brain… Continue reading Erythropoietin did not help newborns with cerebral hypoxia

Roscosmos and NASA agreed on cross-flights to the ISS

Roscosmos and NASA have signed an agreement on cross-flights to the ISS, under which the agencies will launch mixed crews of Russian and American cosmonauts on their spacecraft. The first two flights under the agreement will take place in the fall: Anna Kikina will join the Crew Dragon crew, and Francisco Rubio will fly on… Continue reading Roscosmos and NASA agreed on cross-flights to the ISS

Paleogeneticists read the genomes of ten people from a Mexican colonial necropolis

Paleogeneticists read the DNA of ten individuals buried in the necropolis at the parish church in the city of Campeche in the early colonial period (mid-16th to late 17th centuries). It turned out that eight out of ten people were Native Americans, and two more people came from other regions. One woman appeared to be… Continue reading Paleogeneticists read the genomes of ten people from a Mexican colonial necropolis

Entomologists doubt the imminent extinction of monarchs

Contrary to popular belief, North American monarch butterflies, made famous by their long-distance migrations, are not on the verge of extinction. Analysis of data over 26 years showed that, despite the reduction in the number of these insects in wintering areas, their populations remain stable during the breeding season. It is likely that monarchs are… Continue reading Entomologists doubt the imminent extinction of monarchs

The autonomous ship Mayflower crossed the Atlantic Ocean on its second attempt

The autonomous trimaran Mayflower crossed the Atlantic Ocean on its second attempt, partially repeating the route of the original Mayflower, the ship on which English colonists arrived in North America in 1620. The ship experienced technical problems twice, so the route ended in Canada rather than the United States. The original Mayflower was an English… Continue reading The autonomous ship Mayflower crossed the Atlantic Ocean on its second attempt

Joby resumes air taxi flight tests after accident

The American company Joby Aviation has resumed flight testing of an air taxi after its first prototype crashed during testing. They involve the second pre-production prototype, which has already completed 38 flights. Aerotaxi Joby is an electric tiltrotor with a V-shaped tail and six electric motors. It is designed for four people and a pilot.… Continue reading Joby resumes air taxi flight tests after accident