Australia may host a gigantic new radio telescope, known as the Square Kilometre Array (SKA). The SKA will be 100 times larger than the current generation of radio telescopes. Australia is part of an international consortium planning the telescope. Researchers at CSIRO and several Australian universities are investigating a number of design concepts. The SKA will be used to study a wide range of problems in astronomy, in particular how stars and galaxies formed in the early Universe.