You can print the pdf with multiple slides on a page using the latest version of Acrobat. When the print dialog box comes up, click "Properties", next to the printer. Go to "Page layout" and "multi-page." I didn't see any way to print multiple slides per page within OpenOffice.
Topic 1: Overview of the Structure of the Universe
Topic 2: Surveying the Solar System
Topic 3: Celestial Mechanics
Topic 4: Some Basic Physics
Topic 5: Telescopes
Topic 6: Earth: Surface and Interior
Topic 7: Earth: Atmosphere
Topic 8: The Terrestrial Planets
Topic 9: The Giant Planets
Topic 10: Satellites and Rings of the Giant Planets
Topic 11: Asteroids, Comets, and the Kuiper Belt
Topic 12: The Formation of the Solar System
Topic 13: Disks and Planets around Other Stars