"Introduction to telescopes and space probes forprimary and intermediate grade students. Includes fun facts, glossary, resource list and index"--.
Content Note
Includes bibliographical references and index.What is a telescope? -- Who invented the telescope? -- What is an optical telescope? -- How do optical telescopes make -- The invisible visible? -- Where are the largest optical telescopes on Earth? -- What is a radio telescope? -- What is an infrared telescope? -- Why would an infrared telescope tag along after earth? -- What is an ultraviolet telescope? -- What are x-ray and gamma ray telescopes? -- What is an observatory and where are they located? -- What is the largest telescope in orbit? -- How does Hubble stay in orbit? -- Why is Hubble so important? -- What is a space probe? -- What kinds of facts do space probes collect? -- For what kinds of mission would a probe be good? -- What was the space race? -- Where did early space probes go? -- When did space probes reach venus, mercury, and mars? -- How did pathfinder collect facts about Mars? --.