Jonn scored the IMAX Corporation and Space Telescope Science Institute film, "Galaxies Across Space And Time" about the Deep Field survey of galaxies researched at the edge of the known universe. The film won major award categories at the Large Format Academy Awards in Los Angeles.

Jonn's album "And The Stars Go With You" was used in the opening show production of the Christa McAuliffe Planetarium in New Hampshire in 1988. The album had just been released a few months earlier.

Jonn's music is featured in the planetarium theatre aboard the Queen Mary II, the world's most advanced cruise ship. The Planetarium theatre on board the Queen Mary II was designed and built by Sky Skan, Inc.

Jonn was commissioned to compose the music for the world's first interactive planetarium theater  production about the advanced application of robotics in space with Lucasfilm and the Hayden Planetarium in New York City. His music has been heard in planetariums worldwide including London, Munich, Sweden, Japan, China, Canada, South America, Australia, France, Spain, Norway, Singapore, Russia and others.