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Additional Resources for you to Explore
Has this theory ever been tested in space?  In 1971, an Apollo Astronaut performed this exact experiment on the moon.  Check out NASA  and see the results.  For a video of the occurrence, click here.   

Where did Galileo test his theory on gravity?  The Leaning Tower of Pisa of course!  Learn more about Galileo's experiment at the Leaning Tower of Pisa here and watch as it is re-enacted! 

Interested in seeing what happens to water in a vacuum?  Watch this! Why can't a human go into space without a space suit?  What would happen?  Visit this site and find by reading  THE BODY AT VACUUM and watching a video of an astronaut, Jim Leblanc, as he tests a spacesuit.  The SciShow also has a great video about,  What Happens if Your Body is Exposed to the Vacuum of Space?   Finally, watch StarTalk as  Neil deGrasse Tyson Explores The Vacuum of Space.   
 
Love learning about all things astronomy?   Watch and find out more with these TED Ed lessons:  

Neil deGrasse Tyson on Surviving in Space without a Spacesuit.
Free falling in outer space - Matt J. Carlson
Life of an astronaut - Jerry Carr                
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