The International Space Station is the site of a unique science experiment.
Since humans will be going into space sometime soon, researchers want to know how weightlessness and other aspects of travel in the universe will affect us.
So, the most recent supply mission on the ISS included containers of human and bull sperm. It's part of an experiment to study how weightlessness affects how sperm move and fuse with an egg. In case you’re wondering why bull sperm? It moves and acts similar to the human type.
The experiment will eventually be sent back to the University of Kansas where scientists will study the results.
Source: Live Science
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