File:Usa edcp relief location map. They collected data from 2002 to 2010 but robert d kaplan pdf gravitational waves were detected. The improved detectors began operation in 2015.
LIGO is the largest and most ambitious project ever funded by the NSF. August 17, 2017, was the first detection of a collision of two neutron stars, which simultaneously produced optical signals detectable by conventional telescopes. The MIT study established the feasibility of interferometers at a 1-kilometer scale with adequate sensitivity. Drever, Thorne, and Weiss formed a LIGO steering committee, though they were turned down for funding in 1984 and 1985. By 1986, they were asked to disband the steering committee and a single director, Rochus E. In 1988, a research and development proposal achieved funding. From 1989 through 1994, LIGO failed to progress technically and organizationally.
Only political efforts continued to acquire funding. However, requirements for receiving the funding were not met or approved, and the NSF questioned the technological and organizational basis of the project. By 1992, LIGO was restructured with Drever no longer a direct participant. Ongoing project management issues and technical concerns were revealed in NSF reviews of the project, resulting in the withholding of funds until they formally froze spending in 1993. NSF made clear that LIGO had one last chance for support.