"An exploration of the transformative impact of inventions and discoveries in the field of astronomy. Features include fact boxes, sidebars, biographies, timeline, glossary, list of recommended reading and Web sites, and index"--Provided by publisher.

Constellations -- Calendar stones -- Sundials -- Earth is round -- Stars as guides -- Modern calendar -- Telescope -- Solar system -- Planetariums -- Law of gravitation -- Seventh planet: Uranus -- Messier catalog -- Eighth planet: Neptune -- Black holes -- Time zones -- Atomic time -- First human on the moon -- Hubble space telescope -- Planet defined -- Important dates in astronomy.