The thread is pretty old, you can play it on regular Spring these days.
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I've decided on a whim to make a space mod. I'm using a few SVN-only features so releasing it soon won't make sense anyway.
The current state of it is that the economy and construction Lua is mostly done (you can't remove things from the buildqueue yet) but only two units are implemented (the carrier which acts as a mobile factory and a crappy fighter). It's meant to be played on a completely empty voidwater map.
The economy consists of those planets in the screenshot, they're owned by the alliance that has at least one unit in their circle (if more than one alliance has then it's considered contested and belongs to noone) and produce money for all members of the alliance. Construction is done on board of the carrier for small ships and off-map for large ones, the large ships have to be placed near friendly carriers or planets once they are complete.
The solid colored circles are just the LOS, voidwater maps won't show the LOS view so I lua'd a display for it. When lots of units condense in an area the circles get way too solid, I'm trying to think of a way to prevent that (tried making it use the depthbuffer but couldn't get that to work).
The skybox on the map is taken from hrmpf's DeepSpaceConflict, I haven't asked him for permission yet.