Space frontiers

An introduction to space science that traces the history of the field, discusses how scientists observe space, and describes the scientific principles that form the basis of current theories about the cosmos.

Learn about the tools, equipment, and machinery used in space, and how they allow scientists to continue making discoveries about the universe.

Find out how astronauts prepare for and deal with the challenges of space.

An introduction to the universe that provides information on stars and galaxies, discusses the possibility of life elsewhere, and offers a timeline that traces the history of the universe.

An introduction to space missions that details past, present, and future missions, describes the technology that was developed for these programs, and includes a timeline that traces the history of space exploration.