- The BiosphereGregory Vogt
- Solar systemGregory Vogt
- 5-Minute ScienceDeborah Shearer, Gregory Vogt
- Space stationsGregory Vogt
- RocketsGregory Vogt
- Asteroids (Galaxy)Gregory Vogt
- PlutoGregory Vogt
- The Milky WayGregory Vogt
- Sun (The Galaxy)Gregory Vogt
- Meteors and Meteorites (Galaxy)Gregory Vogt
- The HydrosphereGregory Vogt
- Space robotsGregory Vogt
- SpaceshipsGregory Vogt
- Apollo and the moon landingGregory Vogt
- The Milky Way and Other Galaxies (Vogt, Gregory. Our Universe.)Gregory Vogt
- Space Mission PatchesGregory Vogt
- The robot inventor's handbookGregory Vogt
- Saturn (The Galaxy)Gregory Vogt
- Apollo MoonwalksGregory Vogt
