New exoplanet discoveries have been popping up with increasing regularity in recent years thanks to technological advances that allow scientists to spot evidence of their existence from afar. Spotting a dip in the brightness of a star is one of the easiest ways to find planets, but new research shows that it’s also possible to spot “dead” planets orbiting burned-out stars just by listening for them.
A new study published in Monthly Notices of the Royal Astronomical Society explains how metal-rich planetary cores that survive around white dwarf stars actually beam a radio signal into space that can be detected from Earth for hundreds of millions or even a billion years.››
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Dead planets beam ‘zombie’ radio signals into space for up to a billion years, scientists say originally appeared on BGR.com on Sun, 11 Aug 2019 at 14:08:00 EDT. Please see our terms for use of feeds.
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