Luna 21
E1055909
UNEXPLORED
Luna 21 was a Soviet lunar mission that delivered the Lunokhod 2 rover to the Moon in 1973 as part of the USSR's robotic exploration program.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Luna 21 canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T12807677 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Luna 21 Context triple: [Luna spacecraft, hasPart, Luna 21]
-
A.
Luna 17
Luna 17 was a Soviet lunar mission launched in 1970 that successfully delivered the Lunokhod 1 rover to the Moon, achieving the first remote-controlled rover operation on another celestial body.
-
B.
Luna 15
Luna 15 was a Soviet unmanned lunar probe launched in 1969 that attempted to return samples from the Moon but crashed during its descent.
-
C.
Luna 24
Luna 24 was a Soviet lunar sample-return mission launched in 1976 that successfully collected and brought back soil from the Moon’s surface.
-
D.
Luna 16
Luna 16 was a Soviet robotic spacecraft that achieved the first successful uncrewed lunar sample return mission from the Moon to Earth in 1970.
-
E.
Luna 13
Luna 13 was a Soviet robotic spacecraft that successfully soft-landed on the Moon in 1966 and transmitted panoramic images and data about the lunar surface.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Luna 21 Target entity description: Luna 21 was a Soviet lunar mission that delivered the Lunokhod 2 rover to the Moon in 1973 as part of the USSR's robotic exploration program.
-
A.
Luna 17
Luna 17 was a Soviet lunar mission launched in 1970 that successfully delivered the Lunokhod 1 rover to the Moon, achieving the first remote-controlled rover operation on another celestial body.
-
B.
Luna 15
Luna 15 was a Soviet unmanned lunar probe launched in 1969 that attempted to return samples from the Moon but crashed during its descent.
-
C.
Luna 24
Luna 24 was a Soviet lunar sample-return mission launched in 1976 that successfully collected and brought back soil from the Moon’s surface.
-
D.
Luna 16
Luna 16 was a Soviet robotic spacecraft that achieved the first successful uncrewed lunar sample return mission from the Moon to Earth in 1970.
-
E.
Luna 13
Luna 13 was a Soviet robotic spacecraft that successfully soft-landed on the Moon in 1966 and transmitted panoramic images and data about the lunar surface.
- F. None of above. chosen
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.