Freefall Achieved On LISA Pathfinder

LPF_Operating_in_space_625
Another major milestone towards GW space missions

On Monday, February 22, 2016, the two cubes housed in the core of ESA’s LISA Pathfinder were left to move under the effect of gravity alone – another milestone towards demonstrating technologies to observe gravitational waves from space.

Source: http://sci.esa.int/lisa-pathfinder/57461-lisa-pathfinder-operating-in-space/