Vly News - Professional news Platform

Share this Article You are free to share this article under the Attribution 4.0 International license. A site where 37,000 years ago a mammoth mother and her cub met their end offers some of the best evidence for humans settling in North America much earlier than conventionally thought. Bones from the abattoir record how humans shaped chunks of their long bones into disposable knives to break up their carcasses, and make their fat over fires. But a key detail sets this site apart from others from this era. That’s in New Mexico—a place where most archaeological evidence doesn’t locate humans until tens of thousands of years later. Researchers reveal a wealth of evidence that is rarely found in one place. These include fossils with blunt force fractures, bone-chilling blades with worn edges, and signs of a controlled fire. And thanks to carbon-dating analysis of collagen extracted from mammoth bones, the site also dates from 36,250 to 38,900...

The largest shark in our oceans already has a reputation for being gentle giants, and it seems there are more than we ever realized. whale shark ( Typhoid rhino ) is a filter feeder, considered carefully combing the water for small animals such as krill. Among the litany of small swimmers they take are leafy greens made up of algae and other photosynthetic organisms. It’s unavoidable, but researchers wonder if this vegetation is just a garnish for carnivores, or if it provides the side salad needed to keep them swimming. Researchers examining dirt and skin samples identified what these 10-meter (32-foot) long sea hoovers were actually taking advantage of from the giant pool of water they breathed through their system. “The droppings suggest that they ate krill,” said University of Tasmania marine biologist Patti Virtue. “But they don’t metabolize much.” In contrast, whale sharks, which are true sharks with cartilage instead of bones, seem to extract...

Astronomers have seen in the galaxy adjacent to our Milky Way what they call the cosmic “needle in the haystack” – a black hole that is not only classified as dormant but appears to have been born without the explosion of a dying star. Researchers said Monday this one differs from all other known black holes in that it is “quiet X-ray” – it doesn’t emit the intense X-ray radiation that indicates it devours nearby matter with a strong gravitational pull – and it doesn’t. born in the explosion of a star called a supernova. Black holes are extremely dense objects with such strong gravity that even light cannot escape. This one, with a mass at least nine times that of our sun, was detected in the Tarantula Nebula region of the Great Magellanic Cloud galaxy and is located about 160,000 light-years from Earth. A light year is the distance light travels in a year, 5.9 trillion miles (9.5 trillion km). A very luminous and hot blue star with a mass about 25 t...