Researchers say global cooling 13,000 years ago is coincident with major volcanic eruptions. Texas researchers from the University of Houston, Baylor University, and Texas A&M University have discovered evidence for why the Earth cooled dramatically 13,000 years ago, dropping temperatures by about 3°C. The evidence is buried in a Central Texas cave, where horizons of sediment ...
The atmospheric planetary boundary layer (PBL), also called the atmospheric boundary layer, is the region of the lower troposphere where Earth’s surface strongly influences temperature, moisture, and wind through the turbulent transfer of air mass. The PBL controls the dispersion of air pollutants, such as atmospheric aerosols, and is closely related to human life. Previous ...
The unusual dark greenish and glistening “gel-like” substance in a crater on the far side of the Moon has attracted widespread interest following its discovery by the Chang’e-4 rover in July 2019. A research team led by Prof. Di Kaichang from the Aerospace Information Research Institute (AIR) of the Chinese Academy of Sciences and their ...
The arrival of humans in the Americas may predate the peak of the last ice age, new research shows. Humans may have reached the Americas over 30,000 years ago, new research from international teams of scientists shows — a period 15,000 years earlier than previously thought. However, the human impact on now-extinct large mammals (megafauna) ...
Scientists have found that interstellar organic matter could produce an abundant supply of water by heating, suggesting that organic matter could be the source of terrestrial water. There remain a number of mysteries on our planet, including the elusive origin of water on the Earth. Active studies suggested that terrestrial water was delivered by icy comets or ...
Scientists have made a pivotal breakthrough in the important emerging field of spintronics — which could lead to a new high-speed energy-efficient data technology. An international team of researchers, including the University of Exeter, has made a revolutionary discovery that has the potential to provide high-speed, low-power usage for some of the world’s most well-used ...
The origin of high-energy cosmic neutrinos observed by the IceCube Neutrino Observatory, whose detector is buried deep in the Antarctic ice, is an enigma that has perplexed physicists and astronomers. A new model could help explain the unexpectedly large flux of some of these neutrinos inferred by recent neutrino and gamma-ray data. A paper by Penn ...
The surviving core of a gas giant has been discovered orbiting a distant star by University of Warwick astronomers, offering an unprecedented glimpse into the interior of a planet. The planetary core, which is the same size as Neptune in our own solar system, is believed to be a gas giant that was either stripped ...
At first sight, this image from the NASA/ESA Hubble Space Telescope portrays the sparkling stars of AGC111977, a dwarf galaxy located around 15 million light-years away and visible in the lower left part of the image. Other galaxies appear sprinkled across the frame, along with foreground stars from our own galaxy, the Milky Way. After ...
Figuring out how much energy permeates the center of the Milky Way — a discovery reported in the July 3 edition of the journal Science Advances — could yield new clues to the fundamental source of our galaxy’s power, said L. Matthew Haffner of Embry-Riddle Aeronautical University. The Milky Way’s nucleus thrums with hydrogen that has been ...
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