Professor of Physics, Deputy Director (Solar System) at the Mullard Space Science Laboratory, UCL
Jupiter’s moon Europa produces less oxygen than we thought — it may affect our chances of finding life there
Although Europa boasts three basic ingredients for life –we don’t yet know if there has been enough time for life to develop
Bittersweet feeling as Cassini mission embarks on its ‘grand finale’ ahead of death plunge
One of the most successful space exploration missions of all time still has a lot left to uncover