Planet spotters seek a watery twinkle in the sky

Planet spotters seek a watery twinkle in the sky


SUNLIGHT glinting off alien oceans may help astronomers spot water on other worlds. Darren Williams of Pennsylvania State University, Behrend, and Eric Gaidos of the University of Hawaii at Manoa modelled the way a distant planet would reflect light towards Earth as it orbits its star. They showed that when a wet planet appears as a crescent,
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