e X Newsletter Week 12
lun. 24 mars à 04:34Dear olivier hartmanshenn,
Here is your customized Science X Newsletter for week 12:
Unveiling the mysterious 'red sprite' lightning strikes over the Himalayas
Have you ever heard of—or even seen—red lightning? These are not animated characters but real atmospheric phenomena known as electrical discharges that occur high above thunderstorms. Scientists refer to them as "red sprites," named for their jellyfish-like appearance and vivid red flashes. Now, imagine witnessing these mesmerizing displays over the world's highest mountain range—the Himalayas.
Oxygen discovered in most distant known galaxy
Two different teams of astronomers have detected oxygen in the most distant known galaxy, JADES-GS-z14-0. The discovery, reported in two separate studies, was made possible thanks to the Atacama Large Millimeter/submillimeter Array (ALMA), in which the European Southern Observatory (ESO) is a partner. This record-breaking detection is making astronomers rethink how quickly galaxies formed in the early universe.
Massive, long-lived trees discovered in the Tanzanian rainforest are a new species
A team of botanists with members from Muse–Museo delle Scienze, Udzungwa Corridor LTD, Via Grazia Deledda and the National Museum of Kenya has discovered a new species of tree growing in the mountainous rain forests of Tanzania. In their paper published in the journal Phytotaxa, the group describes how and where the tree was found and its characteristics.
A transition point in romantic relationships may signal the beginning of their end
The end of a romantic relationship usually does not come out of the blue but is indicated one or two years before the breakup. As the results of a psychological study have demonstrated, the terminal stage of a relationship consists of two phases. First, there is a gradual decline in relationship satisfaction, reaching a transition point one to two years before the dissolution of the relationship.
A possible way to generate electricity using Earth's rotational energy
A trio of physicists from Princeton University, CIT's Jet Propulsion Laboratory and Spectral Sensor Solutions, all in the U.S., is proposing the possibility of generating electricity using energy from the rotation of the Earth. In their study, published in the journal Physical Review Research, Christopher Chyba, Kevin Hand and Thomas Chyba tested a theory that electricity could be generated from the Earth's rotation using a special device that interacts with the Earth's magnetic field.
Deadly bacteria have developed the ability to produce antimicrobials and wipe out competitors, scientists discover
A drug-resistant type of bacteria that has adapted to health care settings evolved in the past several years to weaponize an antimicrobial genetic tool, eliminating its cousins and replacing them as the dominant strain. University of Pittsburgh School of Medicine scientists made the discovery when combing through local hospital data—and then confirmed that it was a global phenomenon.
Investigating the psychedelic blue lotus of Egypt, where ancient magic meets modern science
Few plants are more celebrated in Egyptian mythology than the blue lotus, a stunning water lily that stars in some of archaeology's most significant discoveries. Researchers found its petals covering the body of King Tut when they opened his tomb in 1922, and its flowers often adorn ancient papyri scrolls.
Dark energy seems to be changing, rattling our view of universe
Dark energy, the mysterious force thought to be driving the ever-faster expansion of the universe, appears to be changing over time, according to new observations released Wednesday.
Genetic study reveals hidden chapter in human evolution
Modern humans descended from not one, but at least two ancestral populations that drifted apart and later reconnected, long before modern humans spread across the globe.
A Dyson swarm made of solar panels would make Earth uninhabitable, suggests study
As civilizations become more and more advanced, their power needs also increase. It's likely that an advanced civilization might need so much power that they enclose their host star in solar energy-collecting satellites. These Dyson swarms will trap heat so any planets within the sphere are likely to experience a temperature increase. A new paper explores this and concludes that a complete Dyson swarm outside the orbit of Earth would raise our temperature by 140 K.
High-resolution images capture intricate structure of mitochondrial supercomplexes
Mitochondria are the powerhouses in our cells, producing the energy for all vital processes. Using cryo-electron tomography, researchers at the University of Basel, Switzerland, have now gained insight into the architecture of mitochondria at unprecedented resolution.
Origin of life: How a special group of single-celled organisms laid the foundation for complex cells
Ten years ago, nobody knew that Asgard archaea even existed. In 2015, however, researchers examining deep-sea sediments discovered gene fragments that indicated a new and previously undiscovered form of microbes.
Saturday Citations: The universe doesn't care about your precious standard model
This week, ALMA researchers reported the discovery of oxygen in the most distant known galaxy. Geologists believe unusual structures in rock in the desert regions of Namibia, Oman and Saudia Arabia may be evidence of an unknown microorganism. And a group of physicists may have generated a tiny charge of electricity using the Earth's rotational energy. But the biggest story by far is the second release of data from the DESI survey of the universe, which could upend the standard model:
Extremely Large Telescope could sense hints of life at Proxima Centauri in just 10 hours, simulations suggest
The Extremely Large Telescope (ELT), currently under construction in northern Chile, will give us a better view of the Milky Way than any ground-based telescope before it. It's difficult to overstate how transformative it will be.
Cosmic anomaly hints at frightening future for Milky Way
A terrifying glimpse at one potential fate of our Milky Way galaxy has come to light thanks to the discovery of a cosmic anomaly that challenges our understanding of the universe.
JWST captures its first direct images of carbon dioxide outside solar system
The James Webb Space Telescope has captured its first direct images of carbon dioxide in a planet outside the solar system in HR 8799, a multiplanet system 130 light-years away that has long been a key target for planet formation studies.
Quantum genesis: The emergence of a flat universe and its mirror from nothing
I've long been fascinated by the fundamental mystery of our universe's origin. In my work, I explore an alternative to the traditional singularity-based models of cosmology. Instead of a universe emerging from an infinitely dense point, I propose that a flat universe and its time-reversed partner—an anti-universe—can emerge together from nothing through a smooth, quantum process.
Blue Ghost lander captures stunning sunset shots on the moon before falling silent
A private lunar lander has captured the first high-definition sunset pictures from the moon.
What's behind the 'pop and slosh' when opening a swing-top bottle of beer?
In a fun experiment, Max Koch, a researcher at the University of Göttingen in Germany—who also happens to be passionate about homebrewing—decided to use a high-speed camera to capture what occurs while opening a swing-top bottle of homebrew.
Unusual desert rocks suggest unknown microorganism that uses marble and limestone as a habitat
In the desert areas of Namibia, Oman, and Saudi Arabia, research work has revealed unusual structures that are probably due to the activity of an unknown microbiological life form. Unusually small burrows, i.e., tiny tubes that run through the rock in a parallel arrangement from top to bottom, were discovered in marble and limestone of these desert regions. The paper is published in the Geomicrobiolog
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