What does it look like if you play with giant balls of water in space?
See above.
European Space Agency astronaut Andre Kuipers took this photo earlier this year while on a six-month mission to the International Space Station.
While there he conducted over 50 scientific experiments, while posting some of his best pictures to Twitter - including this on of himself playing with water 'balls'.
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Back home on Earth the ball would have exploded after falling to the ground, but instead the bubble stayed put and filled with air.
For more awesome photos of space - this time taken from the Earth - see below.