The restoration of an ancient Egyptian temple in Esna, located about 60 km south of the ancient capital of Luxor in Egypt, has uncovered the original colors of the temple inscriptions and images, and revealed previously unknown names of ancient Egyptian constellations. The temple of Esna, dedicated to the Egyptian deity Khnum, is one of [...]
An international team of scientist from the United States, the United Kingdom and Taiwan has developed the world’s smallest memristor. Their results appear in the journal Nature Nanotechnology. In 2018, University of Texas at Austin’s Professor Deji Akinwande and colleagues created what was then the thinnest memory storage device, dubbed ‘atomristor,’ with a single atomic [...]
‘Superbolts’ are distinct from typical lightning flashes and can be more than 1,000 times brighter, according to two new papers published in the Journal of Geophysical Research: Atmospheres. In 1977, U.S. scientist Turman Bobby identified lightning that was 100 times brighter than normal in the data from the bomb-monitoring Vela satellites. This observation sparked a [...]
NASA’s Curiosity rover has found a series of symmetrical, 10-m- (33-foot-) high gravel ridges - sedimentologic evidence of ancient giant floods - in Gale Crater on Mars. “We identified megafloods for the first time using detailed sedimentological data observed by the rover Curiosity,” said Dr. Alberto G. Fairén, an astrobiologist in the Department of Astronomy [...]
Research reveals how pores form during metals additive manufacturing and become defects trapped in solidifying metal. The practical value of this research is that it can inform industry on how to predict and improve 3D printing processes.
New evidence indicates that dolphins are able to consciously slow down their heart rates when preparing to dive, and can even adjust their heart rates according to the length of their intended dive. This allows them to conserve oxygen and adjust their body to the changing pressure as they dive, therefore avoiding issues such as ''the bends''.
A new study shows that among patients who have obesity and who tested positive for COVID-19, a past history of bariatric surgery was significantly associated with a lower risk of hospital and intensive care unit admission.
Using the COmetary Secondary Ion Mass Analyser (COSIMA) instrument on board ESA’s Rosetta spacecraft, researchers have detected phosphorus and fluorine in solid particles collected from the inner coma of comet 67P/Churyumov-Gerasimenko. Comets are remnants from the protoplanetary disk around the young Sun. Being formed beyond the ice-line orbiting the Sun, on average, at distances further [...]
A computational model of a human lung cell has been used to understand how SARS-CoV-2 draws on human host cell metabolism to reproduce. This study helps understand how the virus uses the host to survive, and enable drug predictions for treating the virus to be made.
Although CRISPR-Cas has found many uses in biotechnology and medicine, it originates in nature, where it functions as a microbial immune system. Scientists shed new light on how CRISPR-Cas emerged early during the development of life on Earth, as well as how this immune system is constantly adapting to new challenges.
The distance between our Solar System and Sagittarius A*, the 4-million-solar-mass black hole at the center of our Milky Way Galaxy, is approximately 25,800 light-years, about 1,900 light-years closer than previous estimate, according to an analysis of data from the Japanese VLBI (Very Long Baseline Interferometer) project VERA (VLBI Exploration of Radio Astrometry). “Because Earth [...]
Paleontologists in Madagascar have identified a new genus and species of enantiornithine bird that had a long and deep beak, a morphology that was previously unknown among Mesozoic birds. The newly-identified bird species lived between 70 and 68 million years ago (Late Cretaceous epoch) in what is now Madagascar. Named Falcatakely forsterae, it belongs to [...]
Astronomers using the NASA/ESA Hubble Space Telescope have detected tidal tails in NGC 1052-DF4, a dark-matter-deficient galaxy some 65 million light-years away in the constellation of Cetus, caused by its interaction with its neighboring galaxy NGC 1035. The researchers think that a process called tidal disruption stripped the dark matter from NGC 1052-DF4 and is [...]
Among the new findings, the research team found that chronic oxidative stress during spaceflight contributed to the telomere elongation they observed. They also found that astronauts had shorter telomeres after spaceflight than they did before.
The quantum sensing abilities of nanodiamonds can be used to improve the sensitivity of paper-based diagnostic tests, potentially allowing for earlier detection of diseases such as HIV, according to a new study.
Analysis of survey results has revealed that in women, obesity is linked to various social and economic factors. In addition, this study is the first in Japan to illuminate the connection between abuse during childhood and obesity in adulthood. These results highlight the importance of taking these factors into account when implementing policies to tackle obesity.