ScienceDaily |
Popis: Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution...
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Watch Live: NASA’s Crew-13 could make the fastest U.S. trip to the ISS ever15:51 NASA’s SpaceX Crew-13 mission is scheduled to launch four astronauts to the International Space Station on October 1. The Dragon could reach the orbiting laboratory in just 7 hours and 50 minutes, making it the fastest U.S. spacecraft journey to the ISS in history. Cannabis users were twice as likely to commit violence, review finds15:51 A review of more than 265,000 people found that cannabis use was associated with higher rates of both committing violence and becoming a victim of it. The researchers say the link is significant but does not prove cannabis itself is the cause. A record-breaking X-ray flash may reveal the birth of a magnetar15:51 Astronomers have found strong evidence that some mysterious, minutes-long X-ray flashes are produced when two neutron stars collide and create a magnetar. One record-setting event glowed in X-rays for nearly 10 minutes, potentially opening a new way to find these extreme cosmic mergers. Quantum teleportation breakthrough: Scientists crack a 25-year entanglement challenge15:51 Scientists have developed and experimentally demonstrated a long-sought method for identifying W states, an important form of multi-photon quantum entanglement. The technique could make complex entangled systems much easier to measure, opening new possibilities for quantum teleportation, communication, and computing. Sharks can hear nearly 250 feet away and pinpoint the source15:51 Wild blacktip sharks can detect low-frequency sounds from nearly 250 feet away, according to experiments conducted off the Florida coast. The sharks not only heard the sounds but sharply changed direction away from them, suggesting they could pinpoint where they were coming from. Bats may have first evolved in Europe 65 million years ago15:51 A huge genomic and fossil study suggests bats first evolved in Europe around 65 to 60 million years ago before spreading across the globe. The findings also indicate that flight and echolocation emerged near the beginning of bat evolution, potentially helping explain how bats became one of the most successful mammal groups on Earth. Ocean heatwaves are hiding months of extra warming15:51 Marine heatwaves may be only the most intense part of much longer warming events, with elevated temperatures sometimes lingering for months. Researchers found that conventional measurements underestimate total heat exposure by more than 150% on average, potentially overlooking a major source of stress on marine ecosystems. NASA’s Curiosity rover just hit 5,000 days on Mars and sent back this stunning view15:51 NASA’s Curiosity rover marked 5,000 Martian days by capturing morning and afternoon views that were blended into a striking Mars “postcard.” The panorama shows Curiosity, its tracks, and the enormous landscape surrounding Mount Sharp and Gale Crater. Mulberry may reshape gut bacteria and influence metabolism15:51 Mulberry compounds may reshape the gut microbiome in ways that support intestinal health and metabolism, with some combinations showing especially strong effects in animal studies. However, the results vary depending on the plant part and processing method, and the benefits have yet to be confirmed in humans. Creatine may help build muscle even without exercise, researchers find15:51 Creatine helped middle-aged adults gain muscle and strength even without a structured workout program in a new 12-week study. When combined with exercise and a calorie-reduced diet, it produced even greater strength gains while helping participants add lean tissue and lose fat. Researchers say the results strengthen the case for creatine as a potentially useful tool for maintaining muscle with ag… NASA's Perseverance Mars rover finds groundwater, lakes, and hot fluids in one place15:51 NASA’s Perseverance rover has uncovered a surprisingly complicated history of water in Jezero Crater. Scientists expected the crater’s Margin Unit to contain lake sediments, but instead found ancient igneous rocks that were altered by water on at least three separate occasions. Pompeii’s 2,000-year-old eruption just gave scientists a better clock for Earth’s past15:51 Mount Vesuvius’ famous 79 CE eruption has given scientists a remarkably precise benchmark for dating events deep in Earth’s past. The improved technique could sharpen the timelines of volcanic eruptions, asteroid impacts, extinctions, and other major moments in geological history. Black hole jets may decide the fate of entire galaxies15:51 Powerful jets from supermassive black holes can disturb star-forming gas far beyond a galaxy’s visible edge, leaving a glowing trail hundreds of thousands of light-years long. By keeping this gas hot and preventing it from falling inward, the jets may help determine whether a galaxy keeps forming stars or becomes quiet. Brain scans reveal which disorders are linked to faster brain aging15:51 A massive MRI study found that Alzheimer’s disease, mild cognitive impairment, psychiatric disorders, and addiction are associated with distinct patterns of accelerated brain aging. The strongest effects appeared in Alzheimer’s and mild cognitive impairment, while ADHD and autism showed no significant overall difference. This 245-million-year-old fossil still has its stomach and intestines15:51 A 245-million-year-old marine reptile fossil preserves an astonishing amount of detail, including its stomach, liver, and intestines. The discovery reveals that Austronaga minuta was highly adapted for swimming even though its digestive system remained surprisingly simple. |