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The near-Earth Object 2009 FD, as seen by the ESO's Very Large Telescope (Image Credit: ESO) Every year, more than 5,000 tons of material with cosmic origins lands on Earth’s surface, with as much as 15,000 tons of this “space dust” making its way into the atmosphere but vaporizing during reentry. The resulting rain of micrometeorites that reaches our planet consists mostly of tiny objects anywhere from 30 to 200 micrometers in size, based on past studies. But what are the origins of these large volumes of material that accumulate over time as they shower the Earth throughout the year?...

A research team of international space scientists, led by Dr. Matthias van Ginneken from the University of Kent's School of Physical Sciences, has found new evidence of a low-altitude meteoritic touchdown event reaching the Antarctic ice sheet 430,000 years ago. Extra-terrestrial particles (condensation spherules) recovered on the summit of Walnumfjellet (WN) within the Sør Rondane Mountains, Queen Maud Land, East Antarctica, indicate an unusual touchdown event where a jet of melted and vaporized meteoritic material resulting from the atmospheric entry of an asteroid at least 100 m in size reached the surface at high velocity. This type of explosion caused...

A vast, ancient crater in the western United States may be home to one of the most significant mineral discoveries of the century. Published in the journal Science Advances, researchers have identified a geological formation beneath this site that could dramatically reshape the global landscape for clean energy technology. A Supervolcano’s Legacy Becomes a Resource Powerhouse The McDermitt Caldera, measuring 45 by 35 kilometers, was formed 16.4 million years ago following a catastrophic volcanic eruption. Over time, a lake developed inside the caldera, collecting thick layers of volcanic ash and mineral-rich sediments. These conditions gave rise to lithium-bearing clay minerals,...

Monkeys in modern-day Thai forests create stone artifacts uncannily similar to those crafted by early humans — challenging the established narrative of human cultural evolution. A new study published on Friday in Science Advances suggests the possibility that a critical hallmark of human tool use happened by accident — potentially blurring the line between tool use by early humans and our primate relatives. - snip - In an abandoned oil palm plantation on a national park site, the monkeys would create nut-cracking ‘stations’ beneath the feral trees. There they break open the palm fruit’s oil-rich pit between hand-wielded hammer rocks...

Researchers at Columbia Engineering report that they have built what they say is the world's smallest single-chip system, consuming a total volume of less than 0.1 mm3. The system is as small as a dust mite and visible only under a microscope. In order to achieve this, the team used ultrasound to both power and communicate with the device wirelessly. The study was published online May 7 in Science Advances. “We wanted to see how far we could push the limits on how small a functioning chip we could make,” said the study’s leader Ken Shepard, Lau Family professor of...