RT @spacecasper: Teen satellite makers, a zero-g #3dprinting contest, #citizenscience research +more amateur space exploration news:
smallstepstospace.com/content/2016/7…
RT @spacecasper: Teen satellite makers, a zero-g #3dprinting contest, #citizenscience research +more amateur space exploration news:
smallstepstospace.com/content/2016/7…