Scientists say the volcano on the dwarf planet Ceres is about half as tall as Mount Everest. It likely last erupted several hundred million years ago.READ MORE: UPDATE: Police Shootings Protest In Oakland Turns Violent; Windows Broken, Fires Ignited; Businesses Vandalized
Many planets and their moons show evidence of past volcanic activity, but scientists didn’t know whether this also happened on Ceres.READ MORE: Kansas Camper Arrested In Connection With Boulder Creek Vegetation Fires
The volcano discovery was published in the journal Science.
Dawn completed its prime mission in June and has been given an extension to continue studying Ceres. To save fuel, the spacecraft on Friday will move to a higher altitude above Ceres to begin new observations.MORE NEWS: Four Wounded In Overnight San Jose Shootings
© Copyright 2016 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.