[1] The magazine was founded in 1980[1] by Carl Sagan, Bruce Murray and Louis Friedman.

[1] The magazine is based in Pasadena, California[1] and was published bimonthly for its first thirty years until it went to quarterly publication in June 2011.

It was edited through June 2018 by Donna Stevens, following previous work by Charlene Anderson and Jennifer Vaughn.

Emily Lakdawalla assumed chief editorial responsibilities in September 2018.

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