The discovery that free electrons can move asymmetrically provides a deeper understanding of one of the basic processes in physics: the photoelectric effect. It was first described by Albert Einstein and explains how high frequency light releases electrons from a material. The results have been published in Physical Review Letters. …
Tag: material
This giant exoplanet shouldn’t exist, but it does
As the number of newly discovered exoplanets – planets orbiting distant suns – continues to rise, so do unexpected surprises. Scientists say that giant exoplanet GJ 3512b shouldn’t even exist around its tiny star, but it does. Source: https://earthsky.org/space/giant-exoplanet-gj-3512b-shouldnt-exist…
Quantum material goes where none have gone before
Rice University physicist Qimiao Si began mapping quantum criticality more than a decade ago, and he’s finally found a traveler that can traverse the final frontier. …
Giant Planet Around Tiny Star ‘Should Not Exist’
Thelasko quotes the BBC: Astronomers have discovered a giant planet that, they say, should not exist, according to current theories. The Jupiter-like world is unusually large compared with its host star, contradicting a widely held idea about the way planets form. The star, which lies 284 trillion km away, is an M-type red dwarf – the most common type in our…
NASA creates stunning new black hole visualization
For decades, astronomical theorists have told us that a black hole’s powerful gravity would warp the space around it. This new visualization from NASA’s Goddard Space Flight Center is the best yet at showing exactly how. Source: https://earthsky.org/space/black-hole-visualization-from-side-schnittman-goddard…
Found: 3 black holes due to collide
Take one minute to watch a video of a system of 3 galaxies – called SDSS J0849+1114 – all orbiting each other a billion light years from Earth. Each galaxy contains a supermassive black hole, which are circling each other, about to collide. Source: https://earthsky.org/space/sdss-j08491114-3-black-holes-due-to-collide…
How TikTok Censors Videos That Do Not Please Beijing
According to leaked documents revealed by the Guardian, TikTok instructs its moderators to censor videos that mention Tiananmen Square, Tibetan independence, or the banned religious group Falun Gong. “The documents […] lay out how ByteDance, the Beijing-headquartered technology company that owns TikTok, is advancing Chinese foreign policy aims abroad through the app,” writes Alex Hern for the Guardian. From the report:…
Scientists use drones to probe earthly dust devils, with an eye toward Mars
Dust devils are common are common on Earth, but ubiquitous on Mars, a desert world. Scientists are using drones carrying cameras and other instruments to gain new insights. Source: https://earthsky.org/earth/scientists-use-drones-dust-devils-earth-mars…
‘Valley states’ in this super-thin material could potentially be used for quantum computing
New research on two-dimensional tungsten disulfide (WS2) could open the door to advances in quantum computing. …
Could a melting exomoon explain Tabby’s Star?
This star undergoes a long-term dimming that’s so mysterious it was, at one time, proposed as possible evidence of an alien culture. Now, scientists say, a disk of debris – torn from a melting exomoon – might explain Tabby’s Star. Source: https://earthsky.org/space/tabbys-star-explanation-melting-exomoon…