Imagines sights and experiences on a moon visit.

Describes the nine planets and other bodies of the solar system; includes directions for making models showing the size of the planets and their distance from the sun

Describes snow's physical qualities and how quantities of it can be fun as well as dangerous

Explains how to view stars and ways to locate star pictures, known as constellations, throughout the year

Describes how accurate standards of measurements were determined for time, length and width, volume, temperature, and weight with emphasis on the advantages of the metric system

Describes the origin and nature of tornadoes and how to stay safe when threatened by one of these dangerous storms

Explains in simple terms what happens during a solar eclipse.

Explains the construction and purpose of the International Space Station and the life of the astronauts on board.

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