Laser Interferometer Space Antenna
![Laser Interferometer Space Antenna Laser Interferometer Space Antenna](https://nasa3d.arc.nasa.gov/shared_assets/models/lisa/lisa428.png)
The Laser Interferometer Space Antenna (LISA) is a joint NASA-ESA project to develop and operate a space-based gravitational wave detector sensitive at frequencies between 0.03 mHz and 0.1 Hz. LISA detects gravitational-wave induced strains in space-time by measuring changes of the separation between fiducial masses in three spacecraft 5 million kilometers apart.