From Ptolemy's Spheres to Dark Energy Community Helpers Understand the important role telescopes

Understand the important role telescopes play in studying the stars & planets and in making space travel safe

Leo the Late Bloomer

Teach money values or solutions to problems

Farms Long Ago

The Inventor: Benjamin Franklin

From Ptolemy's Spheres to Dark Energy Community Helpers Understand the important role telescopesGrade: 6 12 The Chain Reactions series explains the history and development of some major 21st century scientific advances. This title tells the story of astronomy, from the ancient belief that all planets revolve around Earth to the latest discoveries about how fast the universe is expanding. Library bound, 64 pages.