vccc

Thanks for the helps! I'll certainly try out those little engines to positioning satellites after unlocking the technologies. So in order to meet the "build a new unmanned probe....", I can: simply EVA the kerbals to make the spacecraft unmanned, or un-dock the satellite, do a save + reload to make ksp recognize the new unmanned probe, or un-dock the satellite, switch control to the unmanned probe

Yes sometimes I do make one travel completing several missions Seems saving lots of effort. I've just started playing this game, and the farthest place I've been is Minmus. Putting a docker on every satellite sounds like a good idea! The hibernate thing got me once when I had a basic rocket with no solar panel... And for the satellite propulsion system, if I need to get the ship back afterwards, I don't have a separate propulsion system for the satellite. Isn't it too heavy for the satellite to have a separate one? Really ?!?! I should have read your comment earlier.........

I have a mission to "build a new unmanned probe...". My plan is to make a spaceship with one kerbal and an unmanned probe attached, so that I can position the satellite and bring some science data back as well. But when I reach the designated orbit and have the unmanned probe un-docked, the mission requirement "build a new unmanned probe..." is still not fulfilled...... The probe has everything required (probodobodyne, solar panel, antenna). And if I remove the kerbal before launching, the "build a new unmanned probe..." is immediately fulfilled when the spaceship is on launchpad. Is this a bug, or I have to launch it with no kerbal to satisfy the "unmanned" requirement?