Posted in: 01/09/2022 – 17:58
Scientific Bulletin titles: Anatomy discovers a new additional artery in the human forearm – the ghost galaxy looked the most beautiful thanks to the James Webb telescope – a remote area in South America where a new type of bird appeared
During autopsies, it was increasingly found that many adult humans had three arteries in their forearms instead of two. To what does this physiological characteristic belong?
In the list of oddities of human evolution, we notice the disappearance of wisdom teeth, a decrease in bone density, and the body temperature tends to decrease to settle on average at the edge of 36.6 degrees Celsius.
But the other physiological change that occurred in some people is that their forearms have three arteries instead of two. Thirty percent of people born at the end of the twentieth century had an extra artery in their forearms, compared to only 10% of people who, by 1880, had a third artery in their forearms. This was disclosed by an Australian study, the results of which were published in the Journal of Anatomy. Three arteries in the forearm may become normal in 2100, according to the Australian study.
Normally, the extra vessel in the forearm is in principle temporary and its role is to supply blood to the fetus’s arm and hand. The third artery in the forearm retracts in favor of the other two and eventually disappears even before the newborn is born. The authors of the Australian study were unable to find a logical explanation for the phenomenon of survival of the third artery in the forearm, which is nothing but evidence that human evolution can act in a blind way.
The James Webb Space Telescope has captured new details of the spiral “Fantôme” galaxy in stunning images published by the European and American space agencies.
Since its launch into space in late 2021 and its practical entry into service last July, the James Webb Telescope has provided a wealth of unprecedented data to scientists, by revealing images of Jupiter and a number of nebulae and other distant galaxies.
In the latest harvest of the James Webb Telescope, we learned new details about Messier 74, the so-called Fantôme Galaxy, a galaxy 32 million light-years away from Earth. In the new image of the Ghost Galaxy provided by the mid-infrared study MIRI instrument, a vortex appears with a blue circle in the center. The telescope also helped to show minute filaments of gas and dust in the bright spiral arms that extend from the center of the image of the Fantôme Galaxy. NASA reminded that the famous Hubble Space Telescope, which was launched in 1990 and is still in service, had previously observed this galaxy.
Currently, the $10 billion James Webb Telescope is located about 1.5 million kilometers from Earth. This telescope was for the first time in a short period of time the presence of carbon dioxide in the atmosphere of a planet outside the solar system, which includes the Earth.
At the frigid tip of South America lives a small bird that has never been discovered but is spurring scientists to study the world’s most remote places.
In the Diego Ramirez archipelago, 100 kilometers from cap Horn in southern Chile, ornithologists have spotted a new bird, Aphrastura subantarctique. This small bird, which weighs 16 grams, is distinguished by its brown color, striped black and yellow stripes, and a large beak that confuses biologists.
At the frigid tip of South America, where the Aphrastura subantarctique was found, there are no bushes and no forests, yet this jungle bird has managed to survive in the South Pacific.
University of Chile biologist Rodrigo Vasquez reported that genetic studies confirmed that the newly discovered bird differed in a mutation from the rest of the classical rayadito species, in addition to other differences in appearance and behavior.
The bird Aphrastura subantarctique could become a symbol that would contribute to the recognition of the little-known Diego Ramírez islands.