Vogt, Gregory L

Presents information on the different tupes of celestial matter known as asteroids, comets, and meteors and on what scientists learned from the impact of a comet on the surface of Jupiter.

An introduction to the bluish-green planet, discovered in 1781 by Sir William Herschel.

Presents information on the geology, atmosphere, seasons, and orbit of planet Earth.

Presents information known about Saturn, its rings, and moons.