Distant exoplanet may be the most volcanic world ever found

A rocky planet less than half the mass of Earth seems to have an atmosphere made almost entirely of sulphur dioxide – this could be due to a huge amount of volcanic activity

​A rocky planet less than half the mass of Earth seems to have an atmosphere made almost entirely of sulphur dioxide – this could be due to a huge amount of volcanic activity A rocky planet less than half the mass of Earth seems to have an atmosphere made almost entirely of sulphur dioxide – this could be due to a huge amount of volcanic activity