weightlessness

"Learn how gravity was discovered and why it helps us to understand everything from how toothpaste comes out of the tube to the movements of the planets."--Provided by publisher.

A resource guide for elementary and middle school science teachers which helps children learn how toys work on Earth and in space.

Describes the equipment that helps astronauts survive in space and stay fit and healthy.

Explains simply some basic principles involved in space flight.

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.

Discusses what gravity is, what it does, and how it affects people.