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Space Exploration|Complete Questions with A+ Graded Answers rocket a device that expels gas in one direction to move in the opposite direction K. Tsiolkovsky Russian physicist who created the theory of how rockets could work in the early 1900s Robert Goddard American physicist who was ...

Space Exploration|Complete Questions with A+ Graded Answers artificial satellite any human-made object placed in orbit around a body in space electromagnetic spectrum all of the wavelengths or frequencies of electromagnetic radiation frequency the number of waves per second radiat...

Space Exploration|Complete Questions with A+ Graded Answers Shuttle Vehicle that carries astronauts into space Exploration A behavior of searching and looking for new ways and solutions. This includes things captured by terms such as search, variation, risk taking, experimentation, play, fle...

Space Exploration|Complete Questions with A+ Graded Answers The Hubble Space Telescopes help scientists explore space by... magnifying galaxies across the universe. The International Space Station help scientists explore space by... allowing scientists live in space and do experiments T...

Space Exploration|Complete Questions with A+ Graded Answers Satellite An object that revolves around another object in space; natural or artificial Sputnik 1 First artificial satellite; launched by the Soviet Union in 1957 Yuri Gargarin First human in space Alan Shepard First Ame...

Space Exploration|Complete Questions with A+ Graded Answers space exploration The investigation of physical conditions in space and on stars, planets, and other celestial bodies through the use of satellites, space probes, or spacecraft with human crews. space station a large artificial sate...

Space Exploration|Complete Questions with A+ Graded Answers main sequence a diagonal area on an H-R diagram that includes more than 90 percent of all stars white dwarf A small, hot, dim star that is the leftover center of an old star Luminosity the true brightness of an object lig...