Earth Departure Stage
E703811
component of lunar mission architecture
planned spacecraft propulsion system
rocket stage
upper stage
The Earth Departure Stage was a planned upper stage rocket for NASA’s Constellation program, intended to propel the Orion spacecraft and lunar lander from Earth orbit toward the Moon.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Earth Departure Stage canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7994154 — 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: Earth Departure Stage Context triple: [Constellation program, component, Earth Departure Stage]
-
A.
Inertial Upper Stage
The Inertial Upper Stage was a two-stage, solid-fueled rocket used primarily with the Space Shuttle and Titan launch vehicles to boost satellites from low Earth orbit to higher orbits such as geostationary transfer orbit.
-
B.
Starship upper stage
The Starship upper stage is the fully reusable spacecraft component of SpaceX’s Starship launch system, designed to carry crew and cargo to Earth orbit, the Moon, Mars, and beyond.
-
C.
Exploration Upper Stage
The Exploration Upper Stage is a powerful second stage designed to enhance NASA’s Space Launch System rocket’s capability to send heavier payloads and crewed missions deeper into space, including to the Moon and beyond.
-
D.
S-IVB
The S-IVB was the single-engine upper stage of NASA’s Saturn launch vehicles, used to place Apollo spacecraft into Earth orbit and send them toward the Moon.
-
E.
External Tank
The External Tank was the large orange-brown fuel tank of NASA’s Space Shuttle, supplying liquid hydrogen and liquid oxygen to the orbiter’s main engines during launch before being jettisoned to burn up in the atmosphere.
- 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: Earth Departure Stage Target entity description: The Earth Departure Stage was a planned upper stage rocket for NASA’s Constellation program, intended to propel the Orion spacecraft and lunar lander from Earth orbit toward the Moon.
-
A.
Inertial Upper Stage
The Inertial Upper Stage was a two-stage, solid-fueled rocket used primarily with the Space Shuttle and Titan launch vehicles to boost satellites from low Earth orbit to higher orbits such as geostationary transfer orbit.
-
B.
Starship upper stage
The Starship upper stage is the fully reusable spacecraft component of SpaceX’s Starship launch system, designed to carry crew and cargo to Earth orbit, the Moon, Mars, and beyond.
-
C.
Exploration Upper Stage
The Exploration Upper Stage is a powerful second stage designed to enhance NASA’s Space Launch System rocket’s capability to send heavier payloads and crewed missions deeper into space, including to the Moon and beyond.
-
D.
S-IVB
The S-IVB was the single-engine upper stage of NASA’s Saturn launch vehicles, used to place Apollo spacecraft into Earth orbit and send them toward the Moon.
-
E.
External Tank
The External Tank was the large orange-brown fuel tank of NASA’s Space Shuttle, supplying liquid hydrogen and liquid oxygen to the orbiter’s main engines during launch before being jettisoned to burn up in the atmosphere.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
component of lunar mission architecture
ⓘ
planned spacecraft propulsion system ⓘ rocket stage ⓘ upper stage ⓘ |
| abbreviation | EDS ⓘ |
| architectureRole | Earth‑departure element of Constellation lunar architecture ⓘ |
| associatedWithProgram |
Altair lunar lander
ⓘ
Ares I ⓘ Ares V ⓘ
linked to:
Ares V (cancelled)
Orion Crew Exploration Vehicle ⓘ
linked to:
Orion spacecraft
|
| cancellationReason | Constellation program cancellation ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| designedForCrewedMissions | true ⓘ |
| designedToPropel |
Altair lunar lander
ⓘ
Orion and lunar lander stack ⓘ
linked to:
Altair lunar lander
Orion spacecraft ⓘ |
| developmentStatus | conceptual design ⓘ |
| era | 2000s ⓘ |
| goal | enable sustained human lunar exploration ⓘ |
| intendedDestination | Moon ⓘ |
| intendedMission |
crew exploration missions beyond low Earth orbit
ⓘ
lunar missions ⓘ trans‑lunar injection ⓘ |
| launchConfiguration | launched on Ares V with Altair lunar lander ⓘ |
| launchVehicle |
Ares V
ⓘ
linked to:
Ares V (cancelled)
|
| missionPhase |
used after Earth orbit insertion
ⓘ
used prior to translunar coast ⓘ |
| operator | NASA ⓘ |
| partOf | Constellation program ⓘ |
| primaryFunction |
perform trans‑lunar injection burn
ⓘ
to propel spacecraft from Earth orbit toward the Moon ⓘ |
| program | Constellation program ⓘ |
| propellantType |
cryogenic propellants (planned)
ⓘ
liquid hydrogen (planned) ⓘ liquid oxygen (planned) ⓘ |
| propulsionRole | high‑energy departure from low Earth orbit ⓘ |
| relatedConcept |
Earth departure stage (generic concept)
ⓘ
Saturn V S‑IVB stage ⓘ
linked to:
S-IVB
|
| reusability | expendable ⓘ |
| spaceAgency | NASA ⓘ |
| status |
cancelled
ⓘ
never flown ⓘ |
| successorConcept | elements of the Space Launch System architecture (conceptual) ⓘ |
| targetOrbitBeforeBurn | low Earth orbit ⓘ |
| usedFor |
sending crewed spacecraft beyond low Earth orbit
ⓘ
supporting lunar surface missions ⓘ |
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: Earth Departure Stage Description of subject: The Earth Departure Stage was a planned upper stage rocket for NASA’s Constellation program, intended to propel the Orion spacecraft and lunar lander from Earth orbit toward the Moon.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Ares V (cancelled)