ΣΥΝΕΧΙΖΟΥΜΕ...

ΣΥΝΕΧΙΖΟΥΜΕ...
ΣΥΝΕΧΙΖΟΥΜΕ...

Παρασκευή 27 Οκτωβρίου 2017

Astronauts can spend 5 hours a week or more exercising in space. Even after all that hard work their muscles lose strength during their trip. Scientists are working hard to try and solve this problem. Until then, astronauts will be spending a lot of...

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