Mare Imbrium

E247684

lunar geological feature lunar mare

Mare Imbrium is a vast, dark lunar mare formed by ancient volcanic activity, prominent on the Moon’s near side and notable as the landing site of several Apollo missions.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (3)

Label	Occurrences
Mare Imbrium canonical	5
Mare Imbrium basin region	1
Mare Imbrium region	1

Statements (37)

Predicate	Object
instanceOf	lunar geological feature ⓘ lunar mare ⓘ
adjacentTo	Mare Frigoris ⓘ Mare Serenitatis ⓘ Oceanus Procellarum ⓘ
age	Imbrian period ⓘ
appears	dark to the naked eye from Earth ⓘ
approximateAgeInBillionsOfYears	3.8 ⓘ
approximateDiameterInKilometers	1120 ⓘ
area	approximately 830000 square kilometers ⓘ
basinType	multi-ring impact basin ⓘ
boundedBy	Montes Alpes ⓘ Apennines ⓘ surface form: Montes Apenninus Montes Carpatus ⓘ Montes Caucasus ⓘ
composedPrimarilyOf	basaltic lava flows ⓘ
containsCrater	Archimedes ⓘ Copernicus vicinity ⓘ Plato ⓘ
diameter	approximately 1120 kilometers ⓘ
filledBy	mare basalts ⓘ
formedBy	ancient volcanic activity ⓘ large impact event ⓘ
hasAlbedo	low ⓘ
is	one of the largest impact basins in the Solar System ⓘ vast dark plain ⓘ
isPartOf	Imbrium Basin ejecta zone ⓘ surface form: Imbrium Basin
landingSiteOf	Imbrium Basin ejecta zone ⓘ surface form: Apollo 15 region (near Montes Apenninus) Luna 17 ⓘ Luna 17 ⓘ surface form: Lunokhod 1
latinNameMeaning	Sea of Showers ⓘ surface form: Sea of Rains Sea of Showers ⓘ
locatedOn	Moon ⓘ
locatedOnSideOfMoon	near side ⓘ
notableFor	large circular outline ⓘ
usedAs	prominent feature for lunar cartography ⓘ
visibleFrom	Earth with naked eye ⓘ

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: Mare Imbrium
Description of subject: Mare Imbrium is a vast, dark lunar mare formed by ancient volcanic activity, prominent on the Moon’s near side and notable as the landing site of several Apollo missions.

Referenced by (7)

Full triples — surface form annotated when it differs from this entity's canonical label.

Apollo 15 → lunarLandingRegion → Mare Imbrium ⓘ

Mare Imbrium vicinity → surrounds → Mare Imbrium ⓘ

Mare Imbrium vicinity → hasCentralFeature → Mare Imbrium ⓘ

Palus Putredinis vicinity → locatedNear → Mare Imbrium ⓘ

Palus Putredinis vicinity → partOf → Mare Imbrium ⓘ

this entity surface form: Mare Imbrium basin region

Hadley–Apennine region → partOf → Mare Imbrium ⓘ

this entity surface form: Mare Imbrium region

Luna 17 → landingSite → Mare Imbrium ⓘ