Assertion: space station's mission | /r/CapableOf | remain operational
Facets:
value: beyond their original lifetimes
type: TEMPORAL
value: potentially last decades
type: TEMPORAL
Source sentences:
text: Station-keeping propellant use can be quite low, facilitating missions that can potentially last decades should other spacecraft systems remain operational.
text: The need to support "legacy" missions that have remained operational beyond their original lifetimes but are still returning scientific data.