Discusses the need for the proposed international space station, its design, and purpose, based partly on experiences with space station Mir.
Describes the landing of Sojourner on Mars, summarizes the history of information gathering missions, and speculates about future plans for explorations of the Red Planet.
Discusses the travel of the Galileo spacecraft from its launch to its orbit around Jupiter, explaining the goals and accomplishments of the mission.
Describes the physical properties of the Sun and its relation to the other bodies in space and shows the direct influence the Sun has on life on Earth.
Describes the Apollo 11 mission to the moon, explains the need for establishing a moon base, and speculates about future situations in which the base would be used.