Long-wavelength spectrometer from the Infrared Space Observatory (identical spare model)
1990-1993 (spare); 1995 (original launched)
1990-1993 (spare); 1995 (original launched)
1977
1980s
1980's
1965-1970
1935-1945
1985
1925-1935
1996-2006
1983
1982
1998
1983
1955-1965