[Jason]

Astronomers have found an enormous void in space that measures nearly a billion light-years across. It is empty of both normal matter - such as galaxies and stars - and the mysterious "dark matter" that cannot be seen directly with telescopes.
The "hole" is located in the direction of the Eridanus constellation and has been identified in data from a survey of the sky made at radio wavelengths.



http://news.bbc.co.uk/1/hi/sci/tech/6962185.stm