The hunt is on for gravity waves

Three craft, millions of kilometres apart and linked by lasers, will watch out for minute ripples in the fabric of spacetime

The European Space Agency (ESA) has formally embarked on a mission to search for gravitational waves from space.

The Lisa (laser interferometer space antenna mission) will use three spacecraft to detect these minute ripples in the fabric of spacetime. The spacecraft will be stationed millions of kilometres apart in space, and linked via laser beams.