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- New insights into sleep uncover mechanisms with broad implications for boosting brainpower
- Discovery of van Hove Singularities could Lead to Novel Materials with Desirable Quantum Properties
- The Dark Energy Pushing our Universe Apart may not be what it seems, scientists say
- Scientists discover ‘Toolkit’ to Fix DNA Breaks Associated with Aging, Cancer and Motor Neuron Disease
JWST tagged posts
Second-most Distant Galaxy discovered using James Webb Space Telescope
November 14, 2023,
Astronomy/Space
A New Trail to Exoplanets: Team successfully detects Ammonia Isotopologues in Atmosphere of Cold Brown Dwarf
November 9, 2023,
Astronomy/Space, Chemistry/Nanotechnology
They reveal the origin of wine, the age of bones and fossils, and they serve as diagnostic tools in medicine. Isotopes and isotopologues—molecules that differ only in the composition of their isotopes—also play an increasingly important role in astronomy. For example, the ratio of carbon-12 (12C) to carbon-13 (13C) isotopes in the atmosphere of an exoplanet allows scientists to infer the distance at which the exoplanet orbits its central star.
Until now, 12C and 13C bound in carbon monoxide were the only isotopologues that could be measured in the atmosphere of an exoplanet. Now a team of researchers has succeeded in detecting ammonia isotopologues in the atmosphere of a cold brown dwarf.
As the team has just reported in the journal Nature, ammonia could be measured in the f...
Read MoreNew Webb Images show Gas-rich Baby Galaxies Setting the Early Universe Alight
November 7, 2023,
Astronomy/Space
New images from the James Webb Space Telescope (JWST) have helped Australian astronomers unlock secrets of how infant galaxies started an explosion of star formation in the very early universe.
Some early galaxies were abundant with a gas that glowed so bright it outshone emerging stars. In research published today, astronomers have now discovered just how prevalent these bright galaxies were some 12 billion years ago.
Images from the JWST have shown that almost 90% of the galaxies in the early universe had this glowing gas, producing so-called “extreme emission line features.”
“The stars in these young galaxies were remarkable, producing just the right amount of radiation to excite the surrounding gas...
Read MoreAstronomers watched a Massive Star Disappear. JWST might have some answers
October 9, 2023,
Astronomy/Space
In 2009 a giant star 25 times more massive than the sun simply vanished. OK, it wasn’t quite that simple. It underwent a period of brightening, increasing in luminosity to a million suns, just as if it was ready to explode into a supernova. But then it faded rather than exploding. And when astronomers tried to see the star using the Large Binocular Telescope (LBT), Hubble and the Spitzer space telescope, they couldn’t see anything.
The star, known as N6946-BH1, is now considered a failed supernova. The BH1 in its name is due to the fact that astronomers think the star collapsed to become a black hole rather than triggering a supernova. But that has been conjecture...
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