> AI? What was the training data? Would seem a bit thin on the ground. It's in the article. To train the AI system, Ma inserted simulated signals into actual

> AI? What was the training data? Would seem a bit thin on the ground. It's in the article. To train the AI system, Ma inserted simulated signals into actual data, allowing the autoencoder to learn what to look for. Then the researchers fed the AI more than 150 terabytes of data from 480 observing hours at the Green Bank Telescope. The AI identified 20,515 signals of interest, which the researchers had to inspect manually. Of those, eight had the characteristics of technosignatures and couldn’t be attributed to radio interference. The researchers then returned to the telescope to look at systems from which all eight signals originated but couldn’t re-detect them.