Mercury-Redstone 2
E548697
Mercury-Redstone 2 was a 1961 NASA suborbital test flight of the Mercury program that carried the chimpanzee Ham to space to evaluate spacecraft systems and life-support ahead of human missions.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mercury-Redstone 2 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5817493 — 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: Mercury-Redstone 2 Context triple: [Mercury-Redstone 3, precededBy, Mercury-Redstone 2]
-
A.
Mercury-Redstone 3
Mercury-Redstone 3 was the 1961 NASA mission that carried astronaut Alan Shepard on the first American crewed spaceflight, marking a major early milestone in human space exploration.
-
B.
Mercury-Redstone 4
Mercury-Redstone 4 was NASA’s second crewed Mercury mission, which carried astronaut Gus Grissom on a suborbital flight in 1961 and is known for the premature hatch blow that led to the loss of the Liberty Bell 7 capsule.
-
C.
Mercury-Atlas 6
Mercury-Atlas 6 was the 1962 NASA mission that carried astronaut John Glenn on the first American crewed orbital flight around Earth.
-
D.
Mercury-Atlas 9
Mercury-Atlas 9 was NASA’s final crewed Mercury mission, during which astronaut Gordon Cooper completed the longest and last solo orbital flight of the program in 1963.
-
E.
Mercury-Atlas 7
Mercury-Atlas 7 was a 1962 NASA crewed spaceflight that carried astronaut Scott Carpenter into Earth orbit as part of Project Mercury, advancing the United States’ early human spaceflight efforts.
- 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: Mercury-Redstone 2 Target entity description: Mercury-Redstone 2 was a 1961 NASA suborbital test flight of the Mercury program that carried the chimpanzee Ham to space to evaluate spacecraft systems and life-support ahead of human missions.
-
A.
Mercury-Redstone 3
Mercury-Redstone 3 was the 1961 NASA mission that carried astronaut Alan Shepard on the first American crewed spaceflight, marking a major early milestone in human space exploration.
-
B.
Mercury-Redstone 4
Mercury-Redstone 4 was NASA’s second crewed Mercury mission, which carried astronaut Gus Grissom on a suborbital flight in 1961 and is known for the premature hatch blow that led to the loss of the Liberty Bell 7 capsule.
-
C.
Mercury-Atlas 6
Mercury-Atlas 6 was the 1962 NASA mission that carried astronaut John Glenn on the first American crewed orbital flight around Earth.
-
D.
Mercury-Atlas 9
Mercury-Atlas 9 was NASA’s final crewed Mercury mission, during which astronaut Gordon Cooper completed the longest and last solo orbital flight of the program in 1963.
-
E.
Mercury-Atlas 7
Mercury-Atlas 7 was a 1962 NASA crewed spaceflight that carried astronaut Scott Carpenter into Earth orbit as part of Project Mercury, advancing the United States’ early human spaceflight efforts.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
Mercury program mission
ⓘ
spaceflight ⓘ suborbital spaceflight ⓘ test flight ⓘ |
| animalAstronaut | Ham ⓘ |
| apogee |
approximately 157 miles
ⓘ
approximately 253 kilometers ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crew | Ham ⓘ |
| crewSize | 1 ⓘ |
| crewType | non-human primate ⓘ |
| flightDuration | approximately 16 minutes 39 seconds ⓘ |
| followedBy |
Mercury-Redstone 3
ⓘ
Mercury-Redstone BD ⓘ
linked to:
Mercury-Redstone 1A
|
| landingSite | Atlantic Ocean ⓘ |
| launchDate | 1961-01-31 ⓘ |
| launchMass | approximately 1,300 kilograms (spacecraft) ⓘ |
| launchSite |
Cape Canaveral
ⓘ
Cape Canaveral Air Force Station Launch Complex 5 ⓘ |
| launchVehicle |
Mercury-Redstone launch vehicle
ⓘ
linked to:
Mercury-Redstone rocket
Redstone rocket ⓘ |
| launchYear | 1961 ⓘ |
| missionDuration | about 16.5 minutes ⓘ |
| missionType |
biomedical test flight
ⓘ
suborbital test flight ⓘ |
| notableFor |
carrying the chimpanzee Ham into space
ⓘ
first American primate launched on a Mercury spacecraft ⓘ |
| operator | NASA ⓘ |
| precededBy | Mercury-Redstone 1A ⓘ |
| primaryObjective |
evaluate life-support systems for human spaceflight
ⓘ
study effects of spaceflight on a primate ⓘ test Mercury spacecraft systems ⓘ |
| program |
Project Mercury
ⓘ
linked to:
Mercury program
|
| recoveryBy | USS Donner ⓘ |
| recoveryMethod | ocean splashdown ⓘ |
| relatedAstronaut | Alan Shepard ⓘ |
| relatedHumanMission | Mercury-Redstone 3 ⓘ |
| result |
provided data for subsequent manned Mercury flights
ⓘ
successful validation of Mercury life-support systems ⓘ |
| spaceAgency | NASA ⓘ |
| spacecraft | Mercury spacecraft ⓘ |
| suborbitalRange |
approximately 422 miles
ⓘ
approximately 679 kilometers ⓘ |
| testSubject | chimpanzee ⓘ |
| testSubjectName | Ham ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Mercury-Redstone 2 Description of subject: Mercury-Redstone 2 was a 1961 NASA suborbital test flight of the Mercury program that carried the chimpanzee Ham to space to evaluate spacecraft systems and life-support ahead of human missions.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.