What is Space? Where does it Begin? - What is Astronomy - MoT Basics of Astronomy
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Justin Higgins discusses how the start of space is hard to define because the atmospheres density changes as you go higher in altitude. But, we need a defined place where it does begin, and we decide to make that difference where we stop being able to use an airplanes wing to achieve flight and start having to use rockets: The Karman Line. Minutes of Teaching videos are intended for use with a Middle/High School level student, and until the Google+ comment moderation becomes fully functional all comments are disabled. - Justin
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