We just started planning the #c3space assembly for the #35c3.
Like last year's CSOC the assembly would be intended as place to hang out (and to show of projects) for everyone interested in space exploration, space travel, satellites, cubesats, satellite tracking, diy astronomy, amateur rocketry ... you name it.
See last years website https://c3space.de for examples.
If you are interested, add yourself to the attendee list in our etherpad: https://pads.ccc.de/MCXiI1sPhR
@C3SpaceCentre good Idea. I don't have anything to contribute but id love to check out the your projects