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This is how astronauts' eyes change after a year in space

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 NASA researchers diagnosed Spaceflight-Associated Neuroocular Syndrome (SANS); What is it about   Scott Kelly and Mikhail Kornienko both spent a year aboard the ISS POT Astudy determined that the eyes of astronauts who make long-term trips can suffer a series of damages and   "structural changes"   grouped together in a diagnosis known as   Spaceflight Neuroocular Syndrome   (SANS).   The work published in the ophthalmology section of the   American Medical Association   revealed the eye changes suffered by   Scott Kelly   and   Mikhail Kornienko   , two astronauts who spent 340 days on the   International Space Station   between 2015 and 2016. “Of two of the crew members on a year-long mission, one developed mild optic disc swelling after 270 days of space flight.   In the other crew member, the edema of the optic disc and   the choroidal folds progressively worsened during the mission, ”   says the study. Scott kelly BBC The eye problems they suffer after a space flight ar

They discover an animal that regenerates even if it breaks into three pieces

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  The ability to regenerate organs is common in the animal kingdom, but in this case, they have the ability to do so in their entire body system. Polycarpa mytiligera, the study sea squirt TEL AVIV UNIVERSITY Researchers from   Tel Aviv University   found a sea squirt of the species   Polycarpa mytiligera   , a creature from the Red Sea   , capable of regenerating all its organs, even if it is cut into three pieces. "It is an   amazing discovery   , since it is an animal that belongs to the Chordata phylum, animals with a dorsal cord,   which also includes humans," explained Professor   Noa Shenkar,   from the School of Zoology at Tel Aviv University. , who led the investigation.   “The ability to regenerate organs is common in the animal kingdom   , and even among chordates you can find organ-regenerating animals, such as the gecko, that can grow a new tail.   But not entire body systems.   Here we find a chordate that can regenerate all its organs even if it is separated in

Astronomy: the dazzling "cosmic necklace" observed by the Hubble telescope

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 This new image uses advanced processing techniques to create a fresh and enhanced view of this intriguing object.   The interaction of two doomed stars   created this spectacular ring of brilliant gas clusters   : a diamond necklace of cosmic proportions captured by the   Hubble telescope . Appropriately known as the   "Necklace Nebula   ,   "   this planetary nebula   lies 15,000 light-years distant from Earth   in the tiny, faint constellation Sagitta (the Arrow).  A pair of closely orbiting sun-like stars produced the Necklace Nebula, which also goes by the less glamorous name PN G054.203.4.   About 10,000 years ago, one of the aging stars expanded and engulfed its smaller companion   , creating what astronomers call a "common envelope."   The smaller star continued to orbit within its larger companion, increasing the swollen giant's rotational speed until much of it spun into space.   This escaping ring of debris formed the Necklace Nebula, with particularl

Hot weather and sunlight reduce the spread of Covid-19

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When the findings in countries with warmer climates are compared to those with colder climates, it showed a lower rate of Covid-19 cases. The   research   conducted by a group of scientists showed that the spread of the   new type of coronavirus   (Covid-19) reduced in areas where   warm weather and sunshine   were longer. In the research whose results were published in the journal "Scientific Reports", the experts taking into account factors such as   temperature, the duration of insolation and humidity   that vary according to the geographical location of the countries, concluded that there is an increase in the 4.3 percent in the number of Covid-19 cases per million people for each degree of increase in latitude from the equator. In the study, data such as humidity, temperature and information on the duration of the sun from 117 countries were analyzed, as well as   urbanization, the testing density of Covid-19, the proportion of the elderly population   and expenses on ca

The latest technology is not enough against an asteroid that can destroy the Earth

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 A simulation reveals that the world is desperate against a possible asteroid     A group of experts from the US and the European Space Agency have attended the hypothetical simulation that lasted a week under the leadership of NASA. In the simulation, an asteroid was approaching Earth 35 million miles away and could hit the world within 6 months. The experts made all the calculations on the fate of the crash and the orbit and dimension of the asteroid. When the 6-month time is taken into account, no technology on earth can prevent the asteroid from striking. With this alternate reality the asteroid fell into Eastern Europe. For now no asteroid known to date does not pose a danger to Earth. But two-thirds of asteroids larger than 140 meters still remain undiscovered. That is why NASA and other institutions are trying to prepare themselves with an alternative.

Scientists discover the world's first pregnant Egyptian mummy

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  X-ray image of the pregnant mummy. The woman died between 20 and 30 years of age along with the fetus between weeks 26 and 30 of pregnancy, according to a study. Photo: AFP An anthropologist suggested that the finding would have links to "beliefs about rebirth in the afterlife." Polish scientists indicated this Thursday, April 29, that they discovered a   pregnant Egyptian mummy   - the first in this state in the world - when they carried out X-rays of her 2,000-year-old remains at the National Museum in Warsaw (   Poland   ). "My husband Stanislaw, an Egyptologist, and I, when examining the radiographic images, noticed in the uterus of the deceased woman a picture familiar to parents of three children: a little foot!" Said Marzena Ozarek-Szilke, an anthropologist and archaeologist from the University of Warsaw. "We do not know why the fetus was not removed from the womb of the deceased during its mummification," said Wojciech Ejsmond of the Polish Acade