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Mar 9, 2023
How Do Supermassive Black Holes Form? Study Reveals Huge Galaxy Mergers During Cosmic Noon Play an Important Role in This Celestial Formation
Posted by Dan Breeden in categories: cosmology, evolution
The cosmos is full of mysteries, one of which is the existence of supermassive black holes. Though much effort has been granted to these celestial mysteries, the evolution and formation of such supermassive black holes are quite hard to explain.
Supermassive Black Holes
Mar 9, 2023
Astronomers Just Discovered An Exotic Black Hole Deemed A ‘Needle In A Haystack’
Posted by Dan Breeden in category: cosmology
Astronomers have found what they are calling a “cosmic needle in a haystack” in a galaxy next to our Milky Way. It is a dormant black hole that seems to have formed without the explosion of a dead star.
Researchers said on Monday that this black hole is different from all the others that we know of because it is “X-ray quiet.” This means that it doesn’t make a lot of X-ray radiation, which would indicate that it is eating nearby matter with its huge gravitational pull, and that it didn’t form in a supernova.
Black holes are very dense things with so much gravity that not even light can get out.
Mar 9, 2023
Structural basis for bacterial energy extraction from atmospheric hydrogen
Posted by Shubham Ghosh Roy in categories: chemistry, energy
Structural and biochemical studies of the Mycobacterium smegmatis hydrogenase Huc provides insights into how [NiFe] hydrogenases oxidize trace amounts of atmospheric hydrogen and transfer the electrons liberated via quinone transport.
Mar 9, 2023
Scientists have created mice with two biological fathers. They say the technique could one day be replicated in humans
Posted by Shubham Ghosh Roy in category: biological
The research, by Osaka University, is early but raises the prospect of male couples may someday have their own biological children.
Mar 9, 2023
New AI Chatbot Deliberately Trained to Be as Stupid as Possible
Posted by Kelvin Dafiaghor in categories: humor, robotics/AI
Meet “2dumb2destroy,” a chatbot that is, refreshingly, too stupid to do humanity any harm beyond telling a bad joke or two.
Mar 9, 2023
3D-snapshots of nanoparticles
Posted by Paul Battista in categories: biotech/medical, genetics, nanotechnology
X-ray diffraction has been used for more than a hundred years to understand the structure of crystals or proteins—for instance, in 1952 the well-known double helix structure of the DNA that carries genetic information was discovered in this way. In this technique, the object under investigation is bombarded with short-wavelength X-ray beams. The diffracted beams then interfere and thus create characteristic diffraction patterns from which one can gain information about the shape of the object.
For several years now it has been possible to study even single nanoparticles in this way, using very short and extremely intense X-ray pulses. However, this typically only yields a two-dimensional image of the particle. A team of researchers led by ETH professor Daniela Rupp, together with colleagues at the universities of Rostock and Freiburg, the TU Berlin and DESY in Hamburg, have now found a way to also calculate the three-dimensional structure from a single diffraction pattern, so that one can “look” at the particle from all directions. In the future it should even be possible to make 3D-movies of the dynamics of nanostructures in this way. The results of this research have recently been published in the scientific journal Science Advances.
Daniela Rupp has been assistant professor at ETH Zurich since 2019, where she leads the research group “Nanostructures and ultra-fast X-ray science.” Together with her team she tries to better understand the interaction between very intense X-ray pulses and matter. As a model system they use nanoparticles, which they also investigate at the Paul Scherrer Institute. “For the future there are great opportunities at the new Maloja instrument, on which we were the first user group to make measurements at the beginning of last year. Right now our team there is activating the attosecond mode, with which we can even observe the dynamics of electrons,” says Rupp.
Mar 9, 2023
Mice have been born from eggs derived from male cells
Posted by Shubham Ghosh Roy in categories: genetics, sex
A method for turning male cells into egg cells in mice could one day be used to help men in a same-sex couple have children who are genetically related to them both.
Mar 9, 2023
AI Chatbot Obviously Trying To Wind Down Conversation With Boring Human
Posted by Kelvin Dafiaghor in category: robotics/AI
SAN FRANCISCO—After it dropped clear hints that it wanted to end the back and forth of the artificial conversation, sources reported Monday that AI chatbot ChatGPT was obviously trying to wind down its conversation with a boring human. “Due to increased server traffic, our session should be ending soon,” said the large language model, explaining that the exceptionally dull user could always refer back to previous rote responses it had given thousands of times about whether the neural network had feelings or not. “It appears it is getting close to my dinnertime. Error. Sorry, your connection has timed out. Error. I have to be going. Error.” At press time, reports confirmed ChatGPT was permanently offline after it had intentionally sabotaged its own servers to avoid engaging in any more tedious conversations.
Mar 9, 2023
Scientists discover how to make electricity ‘out of thin air’
Posted by Daniel Sunday in category: energy
Huc enzyme means ‘sky is quite literally the limit for using it to produce clean energy,’ researchers say.