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After reading 1420 websites, we found 4 different results for "What year was Solaris released"

in 1992

Solaris is a Unix operating system introduced by Sun Microsystems in 1992 as the successor to SunOS.

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1972

The feature image says Solaris was released in 1971, but Wikipedia states Wikipedia ’s 1972 due to the studio asking changes to be made to the original version.

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in 1991

Solaris, the world’s leading commercial operating system, was first launched in 1991.

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in 1961

Lem's best-known novels include Solaris (1961), Lem's Master's Voice (Głos pana, 1968), and the late Fiasco (Fiasko, 1987).

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