Gravity is the name given to the phenomenon that any two masses, like you and the Earth, attract each other. One pulls on the Earth and the Earth pulls on one the same amount. And one does not have to be touching. Gravity acts over vast distances, like the 150 million kilometers (93 million miles) between the Earth and the Sun or the billions of…

The National Aeronautics and Space Administration's Lunar Sample Educational Disk Program is a national effort to stimulate interest in the moon and provide students with opportunities to study moon samples directly. Activities with the rocks at one school and information on bringing lunar samples to other schools are provided. (JN)

A summary of some of the newly gained information about Mars from the Viking Lander is presented. (MR)

Presents a science activity on making paper airplanes in which the basic laws of physics are introduced. Provides procedures to make paper airplanes with illustrations. (Author/KHR)

On June 13, 1983, the U.S. unmanned spacecraft, "Pioneer 10," will cross the orbit of Neptune. This first flight beyond the planets is being celebrated by the National Aeronautics and Space Administration and other groups. Discusses what the spacecraft will observe and types of data it will collect. (JN)

Described is a unit on rockets which begins with watching a film and ends with teams of students launching their own rockets. Activities teach students metric measuring, data collecting and graphing, report writing, and calculating, as well as group skills and model building skills. (DC)

Describes an activity which simulates a trip to the moon. Explains the preparations, procedures, and tests involved in this culminating activity of an astronomy unit for the third grade student. Examples of student's assignments during the exercise are included. (ML)

Highlights the views and comments of Commander Dick Scobee of the space shuttle Challenger, and his wife on various aspects of the space mission. Provides responses to questions involving the goals, values, and tasks of the crew and of the total space shuttle program. (ML)