Exoplanets may provide habitable conditions for billions of years, study says

Exoplanets may provide habitable conditions for billions of years, a study has suggested (Owen Humphreys/PA)

Rocky exoplanets – planets outside our Solar System – with atmospheres dominated by hydrogen and helium could provide habitable conditions for billions of years, new research has suggested.

The study suggests these planets can sustain temperate conditions and liquid water on their surface for long periods of time.