Science

Scientists discovered a three-foot-tall pile of mammoth bones that belonged to an adult female and her calf. However, 95 percent of the bones were from the adult

Humans settled in North America 17,000 years EARLIER than previously believed, study finds

Bones of an adult mammoth and her calf have been uncovered at a 37,000-year-old butchering site in New Mexico, which suggest humans settled in North America 17,000 years than previously believed. A team of scientists, led by The University of Texas at Austin, extracted collagen from the bones, allowing them to carbon date the settled …

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New Mexico mammoths among best evidence for early humans in North America

New Mexico mammoths among best evidence for early humans in North America

The remains of two mammoths discovered in New Mexico show that humans lived in North America much earlier than thought. Credit: NPS. About 37,000 years ago, a mother mammoth and her calf met their end at the hands of human beings. Bones from the butchering site record how humans shaped pieces of their long bones …

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Webb space telescope has just imaged another most-distant galaxy, breaking its record after a week

Webb space telescope has just imaged another most-distant galaxy, breaking its record after a week

Astronomers using the James Webb Space Telescope have spotted what they think may be the farthest galaxy ever seen — a distant red smudge 35 billion light-years away. The galaxy, named CEERS-93316, was pictured as it existed just 235 million years after the Big Bang, using Webb’s Near Infrared Camera, which can peer back in …

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Particle Physicists Puzzle Over a New Duality | Quanta Magazine

Particle Physicists Puzzle Over a New Duality | Quanta Magazine

Last year, the particle physicist Lance Dixon was preparing a lecture when he noticed a striking similarity between two formulas that he planned to include in his slides. The formulas, called scattering amplitudes, give the probabilities of possible outcomes of particle collisions. One of the scattering amplitudes represented the probability of two gluon particles colliding …

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The GOES-17 satellite captured images of an umbrella cloud generated by the underwater eruption of the Hunga Tonga-Hunga Ha’apai volcano on Jan. 15, 2022. Crescent-shaped bow shock waves and numerous lighting strikes are also visible.

Tonga’s eruption injected so much water into Earth’s atmosphere that it could weaken the ozone layer

The GOES-17 satellite captured images of an umbrella cloud generated by the underwater eruption of the Hunga Tonga-Hunga Ha’apai volcano on Jan. 15, 2022.  (Image credit: NASA Earth Observatory image by Joshua Stevens using GOES imagery courtesy of NOAA and NESDIS) (opens in new tab) When an underwater volcano in Tonga erupted in January, it …

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A composite image of the star-forming region 30 Doradus, known as the Tarantula Nebula.

Astronomers image the star-birthing web of a cosmic Tarantula Nebula

A composite image of the star-forming region 30 Doradus — also known as the Tarantula Nebula — reveals areas of cool gas that can collapse to form stars.  (Image credit: ESO, ALMA (ESO/NAOJ/NRAO)/Wong et al., ESO/M.-R. Cioni/VISTA Magellanic Cloud survey.) A newly released image of 30 Doradus, also known as the Tarantula Nebula, reveals thin spider-web-like strands of gas …

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New optical switch could lead to ultrafast all-optical signal processing

New optical switch could lead to ultrafast all-optical signal processing

An artist’s illustration of an optical switch, splitting light pulses based on their energies. Credit: Y. Wang, N. Thu, and S. Zhou Engineers at Caltech have developed a switch—one of the most fundamental components of computing—using optical, rather than electronic, components. The development could aid efforts to achieve ultrafast all-optical signal processing and computing. Optical …

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Strange Radio Sources in Distant Galaxy Cluster Defy Our Understanding

Strange Radio Sources in Distant Galaxy Cluster Defy Our Understanding

The Universe is littered with galaxy clusters – huge structures piled up at the intersections of the cosmic web. A single cluster can span millions of light-years across and be made up of hundreds, or even thousands, of galaxies.   However, these galaxies represent only a few percent of a cluster’s total mass. About 80 …

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