Simple text and "out-of-this-world" photography introduce readers to NASA's Cassini-Huygens space probe, and its mission to explore the gas giant Saturn. Important details include the probe's construction, its launch, the landing of the Huygens probe on Saturn's moon Titan, and Cassini's continuing mission to unlock the secrets of Saturn's rings and other unique features.

Introduces readers to NASA's Hubble Space Telescope, and its mission to photograph the wonders of the universe, far above the atmosphere of Earth. Important details covered include the space observatory's planning and engineering, its launch, its scientific discoveries, and how its images have changed our perception of the cosmos. -- Adapted from publisher's description.

Introduces readers to NASA's New Horizons space probe, and its mission to explore Jupiter, Pluto, and the mysterious objects of the Kuiper Belt. Important details include planning and construction of New Horizons, its launch from Earth, flybys of Jupiter and Pluto, and its continuing mission beyond our solar system. -- Adapted from publisher's description.