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Massive Exoplanet Evolved in Extreme 4-Star System

For only the second time, an exoplanet living with an expansive family of four stars has been revealed.

Published On 03/04/2015
1:00 PM EST
The four stars and one planet of the 30 Ari system are illustrated in this diagram. This quadruple star system consists of two pairs of stars: 30 Ari B and 30 Ari A. A gas giant planet (red) orbits one of the stars in 30 Ari B about once a year. New observations led by NASA's Jet Propulsion Laboratory in Pasadena, California, identified the fourth star in the system (green); the three others stars and the planet were previously known. This is the second quadruple star system known to host a planet. | NASA/JPL