A fierce debate over whether there is alien life on Venus has been sparked again after a molecule was spotted in the planet's clouds.
Professor Jane Greaves, from the University of Cardiff, excitedly shared her team's evidence with the science community three years ago after they detected phosphine - which is a molecule associated with biological activity on Earth.
After studying the findings for over a year, the team has since found new evidence that phosphine is even deeper in Venus's atmosphere than first thought - with it reaching all the way down to the clouds.
