Franklyn M Branley

Explains how the water cycle leads to different types of weather patterns.

An introduction to astronomy focuses on the brightest stars and constellations, explaining how to locate them and photograph them and indicating the best times for observation.

Explains the phases of the moon--the changes that seem to happen to it as it goes around Earth.

Describes various scientific theories which explore the extinction of the dinosaurs.

Read and find out about one of nature's most mysterious forces-the earthquake. Some earthquakes are so small that you don't even feel them, while others can make even big buildings shake! Learn why earthquakes happen, where they are most likely to occur, and what to do if one happens near you.

An astronomical exploration of the Star of Bethlehem against a background of the Christmas story.

Explains what comets are, how they are formed, and how their unusual orbits bring them into earth's view at predictable intervals, with a special focus on Halley's comet.

Examines life aboard a space shuttle, describing how astronauts deal with weightlessness, how they eat and exercise, some of the work they do, and more.

Explains in simple text and illustrations what is known about the force of gravity.

Explains what shooting stars are, what they are made of, and what happens to them when they land on Earth.