The six-episode series discusses the history of astronomy as well as black holes and dark matter.
The online companion covers history of cosmology, unanswered questions and other topics related to the program.
Along with details explaining terminology, different models of the universe, biographies of famous historical figures in cosmology and content derived from the program, the web companion included discussions by contemporary cosmologists of "unsolved mysteries", an opportunity to ask questions, as well as suggestions for experiments.
A review in The Age called the series "dull educational programming" that was "simply boring" and "visually weak", noting that Hawking's involvement was "mainly used here for name value".
This article about a scientific documentary work for radio, television or the internet is a stub.