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  • Sabine Hossenfelder: Backreaction
    As AI continues to improve its reasoning abilities, mathematicians are increasingly worried about the computer algorithms replacing them In late May, those fears got even worse when OpenAI revealed that one of its general-purpose reasoning models had written a proof solving a math problem that’s sat unsolved for more than 80 years But should they actually be worried? Let’s take a look
  • Sabine Hossenfelder: Backreaction: April 2026
    The Fermi Paradox is the question of why we haven’t been contacted by any extraterrestrial species In a recent paper, astrophysicists analyzed the paradox by instead examining how civilizations with the ability to send signals through space might develop Unfortunately for us, their findings are quite bleak – but let’s take a look anyway
  • Sabine Hossenfelder: Backreaction: About - Blogger
    Sabine Hossenfelder, aka Bee Research Fellow at the Frankfurt Institute for Advanced Studies I am a physicist More exactly, I am a theoretical physicist People often wonder what a theoretical physicist does You might not believe it, but most of the time I think Sometimes, I scribble funny looking things with a pencil on a notebook Processes like this usually involve lots of coffee and
  • Sabine Hossenfelder: Backreaction: August 2021
    Why the Hype Around Hypersonics? Sabine Hossenfelder Watch on Recently, we’ve seen quite a few headlines about traveling faster than the speed of sound For example, the startup Venus Aerospace wants to reach 12 times the speed of sound That’s nine-thousand miles per hour, and would bring you from New York to Frankfurt in less than half an
  • Sabine Hossenfelder: Backreaction: July 2021 - Blogger
    Imagination and creativity are the heart of science But look at the headlines in the popular science media and you can’t shake off the feeling that some physicists have gotten ahead of themselves Multiverses, dark matter, string theory, fifth forces, and that asteroid which was supposedly alien technology These ideas make headlines, but are then either never heard of again – like
  • Sabine Hossenfelder: Backreaction: April 2021
    Particle Physics Discoveries that Disappeared Sabine Hossenfelder Watch on I get asked a lot what I think about this or that report of an anomaly in particle physics, like the B-meson anomaly at the large hadron collider which made headlines last month or the muon g-2 that was just all over the news
  • Sabine Hossenfelder: Backreaction: Biologists Say They Cracked One of . . .
    Life on Earth has a peculiar property – many biological molecules have a handedness, or a “chirality ” DNA twists one way and not the other, and all the rest of life must fit to this reality In a new paper, researchers say they know why: It all comes down to physics! The answer could change our understanding of life across the universe Let’s take a look
  • Sabine Hossenfelder: Backreaction: June 2022
    Sabine Hossenfelder Watch on I read a lot of news about science and science policies This probably doesn’t surprise you But it may surprise you that most of the time I find science news extremely annoying It seems to be written for an audience which doesn’t know the first thing about science But I wonder, is it just me who finds this
  • Sabine Hossenfelder: Backreaction: 2022 - Blogger
    Today we’ll talk about the 50-year anniversary of Apollo’s blue marble, the Square Kilometre Array, talking to robots, the Yellowstone volcano, nanoparticles that help with carbon capture, a forest bubble – on Mars, a new method of spacecraft propulsion, tests for cancer, earthquake tracking from space, and of course, the telephone will ring Transcript, references, and discussion on
  • Sabine Hossenfelder: Backreaction: An update on the status of . . . - Blogger
    An update on the status of superdeterminism with some personal notes





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