A research team led by University of California Los Angeles astrophysicists recently published their findings in the journal Nature, confirming the existence of the faintest galaxy ever seen from the early universe known as JD1.
An international team of astrophysicists has discovered hundreds of mysterious structures in the centre of the Milky Way.
The one-dimensional cosmic threads are made up of hundreds of horizontal or radial filaments, slender, elongated bodies of luminous gas that potentially originated a few million years ago — and seem to be pointing the direction of the black hole.
“I was actually stunned when I saw these. We had to do a lot of work to establish that we weren’t fooling ourselves,” added Yusef-Zadeh, who’s also a member of the Center for Interdisciplinary Exploration and Research in Astrophysics.
AI researchers have built a Minecraft bot that can explore and expand its capabilities in the game’s open world — but unlike other bots, this one basically wrote its own code through trial and error and lots of GPT-4 queries.
Called Voyager, this experimental system is an example of an “embodied agent,” an AI that can move and act freely and purposefully in a simulated or real environment. Personal assistant type AIs and chatbots don’t have to actually do stuff, let alone navigate a complex world to get that stuff done. But that’s exactly what a household robot might be expected to do in the future, so there’s lots of research into how they might do that.
Minecraft is a good place to test such things because it’s a very (very) approximate representation of the real world, with simple and straightforward rules and physics, but it’s also complex and open enough that there’s lots to accomplish or try. Purpose-built simulators are great, too, but they have their own limitations.
The universe was briefly governed by different physical laws than exist today, according to new research.
If I were a brilliant physicist, I would have written this.
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Continue reading “I don’t believe in free will. This is why” »
Year 2020 o.o!!!
The primary difficulty of interstellar communication is finding common ground between ourselves and other intelligent entities about which we can know nothing with absolute certainty. This common ground would be the basis for a universal language that could be understood by any intelligence, whether in the Milky Way, Andromeda, or beyond the cosmic horizon. To the best of our knowledge, the laws of physics are the same throughout the universe, which suggests that the facts of science may serve as a basis for mutual understanding between humans and an extraterrestrial intelligence.
One key set of scientific facts presents an intriguing question. If aliens were to visit Earth and learn about its inhabitants, would they be surprised that such a wide variety of species all share a common genetic code? Or would this be all too familiar? There is probable cause to assume that the structure of genetic material is the same throughout the universe and that, while this is liable to give rise to life forms not found on Earth, the variety of species is fundamentally limited by the constraints built into the genetic mechanism.
Physicists have long puzzled over why there is more matter in the Universe than its flipped twin, antimatter. Without this imbalance, the two types of material would have canceled out, leaving nothing but a boring glow in the vast emptiness of space.
Somehow, at some point, something changed in the way the Universe works on a fundamental level, favoring the mirrored state – or parity – of one kind of ‘stuff’ over the other.
Continue reading “Signs of a Critical Imbalance in Physics Seen in The Arrangements of Galaxies” »
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“It’s an interesting question to ask: Are there things other than a black hole” that “will give you a hint about what new physics could look like?” added Bah. “But before you get there, you need to know how to tell whether you have a black hole or not, and to do that you have some prototype examples of things that are not black holes to be able to compare.”
Black holes are among the most fascinating and puzzling objects ever observed in our universe. These massive compact entities have so much gravitational power that nothing, not even light, can escape beyond their borders, known as the event horizon. Scientists have imaged black holes with the Event Horizon Telescope and have captured the ripples that these objects make in spacetime, which are called gravitational waves.
An international team of scientists led by Professor Abhijit Chakraborty of the Physical Research Laboratory (PRL) in Ahmedabad identified the densest alien planet, 13 times the size of Jupiter.
This is the third exoplanet identified by PRL scientists. The discovery was detailed in the journal Astronomy & Astrophysics Letters.
Scientists from India, Germany, Switzerland, and the United States utilised the indigenous PRL Advanced Radial-velocity Abu-sky Search spectrograph (PARAS) at Mt. Abu’s Gurushikhar Observatory to precisely determine the planet’s mass. The exoplanet weighs 14 g/cm3.
