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Q&A How does my aliens' tractor beam work in space?

Researchers create a sonic tractor beam By Hanae Armitage 27 October 2015 1:00 pm Using a simple set of loudspeakers, scientists have figured out a way to levitate and rotate object...

7 answers  ·  posted 9y ago by chasly from UK‭  ·  last activity 9y ago by chasly from UK‭

Question space travel physics space-travel