Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered a 2-million-year-old planetary system containing at least four Saturn- to Jupiter-sized gas giants, orbiting the T Tau-type star CI Tau. This is the first time that so many massive exoplanets have been detected in such a young planetary system. The CI Tau system has also set a new record for the most extreme range of orbits yet observed. An artist’s impression...
