The source of the 'fast radio bursts' is a dwarf galaxy 3 million light years away says astronomer Dr Tana Joseph of the UCT Astronomy Department.
The waves were first detected in 2007 and are characterised by huge quick energy bursts.
The physical origin of the waves remains a mystery, for now, says Dr Joseph, but that is the wonder of science - they are always looking for answers.
Listen to Dr Tara Joseph explain what radio waves are, where they are usually found, and how these waves differ:
This article first appeared on 702 : Radio waves from space remain a mystery (for now)