When black holes collide, the very fabric of spacetime trembles. That rumble, gravitational waves, gets picked up by detectors, but decoding the signal used to take hours of computer simulation. The GWAgent algorithm flips the script: it acts like a master chef who tastes a finished dish and is asked to name the recipe. The chef isn't working blind: there's a hint like "base is puff pastry." Similarly, the agent leans on basic physics, tries out simple formulas, tests them against real simulations, and within minutes lands on a nearly exact answer — eight times faster than complex calculations.
Applying the method to the real signal GW200129, recorded by LIGO, scientists were surprised to find that the two black holes were not spiraling in a neat circle but in a highly flattened oval. That's a telltale sign that they were brought together by the hustle and bustle of a dense star cluster — a scenario for which there was previously no direct evidence.
The first gravitational wave ever detected stretched the four-kilometer arm of LIGO by just a thousandth of the width of a proton, a minuteness that humans managed to measure.
Sci-fi writers often turn mysterious cosmic signals into alien messages. But even the silent whisper of black holes needs a skilled decoder, and now AI is stepping into that role.