Astronomers have just detected a watery planet dancing between three separate suns. It's only 320 light years away. A team of astronomers led by Kevin Wagner at the University of Arizona discovered the exoplanet. The scientists were conducting a survey of nearby worlds with incredibly vast orbits, scouring a small section of the sky with several ground-based telescopes based in the arid Atacama Desert of Chile. Through sheer serendipity, this odd triple-star planet popped up first.