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With a twinkle, pulsating stars could deliver signals from E.T.

Neutrino beams could turn Cepheids into messengers

By Ron Cowen

- More than 2 years ago

Searching for signals from extraterrestrials can be a ticklish business. Astronomer John Learned thinks tickling certain stars in just the right way might be a good strategy for ET to phone Earth.

ET PHONE EARTH? This image shows a type of pulsating star, a Cepheid variable (circled), in the galaxy M100.