🌀 AI Reinvents Gravitational Wave Detection
At Caltech, physicists are pushing the boundaries of how precisely we can measure gravitational waves — tiny ripples in space-time caused by black hole collisions and other cosmic cataclysms. Their tool: the LIGO detector, capable of spotting changes smaller than a billionth of an atom. Yet even LIGO has limits.
This year, researchers turned to AI-driven optimization. Instead of conventional symmetric designs, the algorithms proposed bizarre, seemingly chaotic setups — almost like “hallucinations.” After months of testing, one such design boosted LIGO’s sensitivity by 10–15% — a breakthrough that could accelerate discoveries for years to come.
Inspired by this success, a team at the Max Planck Institute created an AI named Urania to design new optical configurations. Not only did it find better solutions, it also rediscovered a forgotten Soviet law from the 1970s, impossible to implement back then — but finally realized in 2025, thanks to AI. 🚀
We may truly be entering a new era of physics.
🔗 Read more on WIRED
#AI #Physics #GravitationalWaves #LIGO
At Caltech, physicists are pushing the boundaries of how precisely we can measure gravitational waves — tiny ripples in space-time caused by black hole collisions and other cosmic cataclysms. Their tool: the LIGO detector, capable of spotting changes smaller than a billionth of an atom. Yet even LIGO has limits.
This year, researchers turned to AI-driven optimization. Instead of conventional symmetric designs, the algorithms proposed bizarre, seemingly chaotic setups — almost like “hallucinations.” After months of testing, one such design boosted LIGO’s sensitivity by 10–15% — a breakthrough that could accelerate discoveries for years to come.
Inspired by this success, a team at the Max Planck Institute created an AI named Urania to design new optical configurations. Not only did it find better solutions, it also rediscovered a forgotten Soviet law from the 1970s, impossible to implement back then — but finally realized in 2025, thanks to AI. 🚀
We may truly be entering a new era of physics.
🔗 Read more on WIRED
#AI #Physics #GravitationalWaves #LIGO
WIRED
AI Is Designing Bizarre New Physics Experiments That Actually Work
Artificial intelligence software is designing novel experimental protocols that improve upon the work of human physicists, although the humans are still “doing a lot of baby-sitting.”
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🔭 Astronomers Have Just Opened a New Map of the Black Hole Universe
The LIGO–Virgo–KAGRA collaboration has released GWTC-5.0 — the largest gravitational-wave catalog ever assembled.
It adds 161 new detections from the O4b observing run, bringing the total number of observed gravitational-wave events since 2015 to 390. What began as a handful of almost unbelievable signals has now become a real population study of black holes.
The jump is dramatic. The fourth observing run alone now accounts for roughly 75% of all gravitational-wave events detected so far. In LIGO’s first observing run, scientists detected just three events over about four months. Now the network is catching around 3–4 black hole mergers per week.
And the data are starting to reveal something deeper: black holes do not all form the same way.
Some likely come from pairs of massive stars born together. Others may meet later inside dense stellar clusters. The most intriguing group are “second-generation” black holes — objects that were themselves created in earlier black hole mergers, then merged again. Their clue is unusually rapid spin, which can act like a fingerprint of these repeated cosmic collisions.
A few highlights from the new catalog:
— 390 gravitational-wave events in total
— 161 new detections from O4b
— Black hole masses clustering around ~10 and ~35 solar masses
— Evidence for second-generation black holes from hierarchical mergers
— Best sky localization yet: one event narrowed down to just 6 square degrees
— Clearest black hole signal ever recorded, with a signal-to-noise ratio of 76.9
— A new gravitational-wave measurement of the Hubble constant with ~25% improved precision
Why it matters: gravitational-wave astronomy is no longer just about detecting rare cosmic “chirps.” It is becoming a census of an invisible universe — one that can study black hole populations, test general relativity, probe stellar evolution, and even help measure the expansion rate of the cosmos.
The big takeaway: astronomy no longer needs light alone. We are now listening to spacetime itself — and the signal is turning into a map.
📄 LIGO press release: https://www.ligo.caltech.edu/news/ligo20260526
📖 Summary: https://www.sciencealert.com/lost-world-of-gravitational-waves-reveals-the-origins-of-black-holes
#GravitationalWaves #BlackHoles #LIGO #Astrophysics #Cosmology
The LIGO–Virgo–KAGRA collaboration has released GWTC-5.0 — the largest gravitational-wave catalog ever assembled.
It adds 161 new detections from the O4b observing run, bringing the total number of observed gravitational-wave events since 2015 to 390. What began as a handful of almost unbelievable signals has now become a real population study of black holes.
The jump is dramatic. The fourth observing run alone now accounts for roughly 75% of all gravitational-wave events detected so far. In LIGO’s first observing run, scientists detected just three events over about four months. Now the network is catching around 3–4 black hole mergers per week.
And the data are starting to reveal something deeper: black holes do not all form the same way.
Some likely come from pairs of massive stars born together. Others may meet later inside dense stellar clusters. The most intriguing group are “second-generation” black holes — objects that were themselves created in earlier black hole mergers, then merged again. Their clue is unusually rapid spin, which can act like a fingerprint of these repeated cosmic collisions.
A few highlights from the new catalog:
— 390 gravitational-wave events in total
— 161 new detections from O4b
— Black hole masses clustering around ~10 and ~35 solar masses
— Evidence for second-generation black holes from hierarchical mergers
— Best sky localization yet: one event narrowed down to just 6 square degrees
— Clearest black hole signal ever recorded, with a signal-to-noise ratio of 76.9
— A new gravitational-wave measurement of the Hubble constant with ~25% improved precision
Why it matters: gravitational-wave astronomy is no longer just about detecting rare cosmic “chirps.” It is becoming a census of an invisible universe — one that can study black hole populations, test general relativity, probe stellar evolution, and even help measure the expansion rate of the cosmos.
The big takeaway: astronomy no longer needs light alone. We are now listening to spacetime itself — and the signal is turning into a map.
📄 LIGO press release: https://www.ligo.caltech.edu/news/ligo20260526
📖 Summary: https://www.sciencealert.com/lost-world-of-gravitational-waves-reveals-the-origins-of-black-holes
#GravitationalWaves #BlackHoles #LIGO #Astrophysics #Cosmology
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