What this node means
Return chain closes the access problem by tying ascent, rendezvous, transit, recovery, and assurance assumptions together.[1,2]
Why it matters
In the CosmosExplore model, return chain is kept as a separate node so cost, logistics, and risk assumptions stay inspectable.[1,2]
Guardrails
- This entry is a model context node, not a mission quote, route promise, or safety assessment.[1]
Related graph nodes
Outgoing
- Lunar access cost stackModel boundary[1,2]
Incoming
- Lunar ascentMission phase[2,1]