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(Laser Interferometer Space Antenna)
(proposed space mission to detect gravitational waves)

LISA (or Laser Interferometer Space Antenna) is a proposed European Space Agency space mission to detect gravitational waves by measuring the distance between three spacecraft using laser interferometry. Three probes, placed in a triangle, spaced 2.5M kilometers from each other, would continually measure the distances between them, awaiting gravitational waves to cause a change.

LISA Pathfinder was a 2015-2017 mission to test some of the necessary technology in space.

LISA had a setback when NASA (an original participant) withdrew in 2011, at which time, New Gravitational Wave Observatory, a scaled-down version was proposed. More recently, ESA has continued to look at LISA as a mission for the 2030s.

(observatory,interferometer,space,ESA,gravitational waves,plan)

Referenced by:
black hole merger
European Space Agency (ESA)
gravitational wave (GW)
gravitational wave spectrum
New Gravitational Wave Observatory (NGO)
optical interferometer
pulsar timing array (PTA)