Rourke's World Of Science Encyclopedia: Astronomy and Space
Launch into Space!: Exploring the Moon
Amazing Robots: Robots in Space
Let's Explore Science: Seasons, Tides, and Lunar Phases
Inventions That Changed the World: Robert Goddard and the Rocket
UXL Encyclopedia of Weather and Natural Disasters
Principles of Science: Principles of Astronomy
Spectacular Space Science: Exploring Beyond the Solar System
Tech Girls: Careers for Tech Girls in Engineering
The Galaxy Guides: Could We Survive on Other Planets?
The Galaxy Guides: Are There Other Galaxies?
The Galaxy Guides: Why Is the Moon Not a Planet?
The Galaxy Guides: Why Do We Have Night and Day?
The Sun-Centered Universe and Nicolaus Copernicus
Johannes Kepler and the Three Laws of Planetary Motion
Scientists and Inventors of the Renaissance