07/10/2011 15:00 BST | Updated 07/12/2011 05:12 GMT

Scientists Discover Venus Has An Ozone Layer

Scientists have discovered that Venus has an ozone layer.

The thin layer, which is hundred of times less dense than the Earth's, was discovered by the European Space Agency's Venus Express craft, researchers report in the journal Icarus.

Until now, ozone layers have only been detected in the atmospheres of Earth and Mars