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Prototype beam splitter for the Advanced Laser Interferometer Gravitational Wave Observatory (aLIGO)
2008 (prototype)
2008 (prototype)
1986
1986
1990-1993 (spare); 1995 (original launched)
1986
1964-1978
1995
1972
1993
1986
early 1990s
1964-1978
1964-1978
1964-1978
1964-1978
1964
1978-1980
1995
1964-1978
1995
1984
1953-1968
1995
1986
1964-1978
1992-2007
1984
1984
1970-1985
1984
circa 1999 -circa 2005
1964-1978
1982-1984
1984
1984
1984