sharing of resourses btwn colonies

#1
hey can someone tell me how do i share resources btwn my colonies? must i kip sending cargo ships back and forth? and i heard we can share power btwn colonies... how do i do that ? for example some post stated tat we can build satelites somewhere else to power up research on another colony and stuff... how do i do tat? thx to whoever helps me...
cron