The Orange County Space Society is a 501 (c)(3) nonprofit organization that advocates the expansion of the human exploration and settlement of space. The organization was founded in June 1990. Each month, OCSS publishes their newsletter, O.C.Space, which is distributed to subscribers both nationally and internationally. Mach 25 Media has been responsible for publication of O.C.Space since September 1998.

Articles and photographs written by Mach 25 Media for O.C.Space are often picked up for distribution and publication by other media outlets. Examples are Ad Astra magazine and