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The International Space StationFrom the first time a person looked up at the sky and wondered 'What's out there?" humans have dreamed about exploring the cosmos. In 1998, scientists from around the world worked together to build a science lab in outer space. Since then, the ISS h Learn MoreSpecial Price $23.25 Regular Price $31.00 -
UFOsFrom the first time a person looked up at the sky and wondered 'What's out there?" humans have dreamed about exploring the cosmos. Over the years, there have been hundreds of reports of UFO (or unidentified flying object) sightings—which the U.S. Learn MoreSpecial Price $23.25 Regular Price $31.00
