Author(s): M. Armano et al. (LISA Pathfinder Collaboration)
Measurements of electrostatic forces on free-falling test masses–2 kg metal cubes–are carried out for the first time in an environment constructed for space-based gravitational wave detectors (a spacecraft 1.5 million km away from Earth).
[Phys. Rev. Lett. 118, 171101] Published Wed Apr 26, 2017