The search for alien life may have just received a galactic boost.

Scientists from University College London have detected water vapour and helium in the atmosphere of another world that is more than twice the size of Earth.

It is the first time that a planet orbiting a star outside our system, or "exoplanet", has been found with both water and temperatures that could support life.

Al Jazeera's Catherine Stancl reports.

25% Off Select Columbia Clothing and Outwear at EasternMountainSports. Shop Now! While Supplies Last!

More videos