Mark R. Showalter
E487058
Mark R. Showalter is an American planetary astronomer known for discovering several moons and rings in the outer solar system and for his work on planetary ring dynamics.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mark R. Showalter canonical | 7 |
How this entity was disambiguated
This entity first appeared as the object of triple T5007410 — 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: Mark R. Showalter Context triple: [Styx, discoveredBy, Mark R. Showalter]
-
A.
David C. Jewitt
David C. Jewitt is a British-American astronomer best known for co-discovering the first Kuiper Belt object beyond Pluto, helping to reveal the Kuiper Belt as a major component of the solar system.
-
B.
Steven Soter
Steven Soter is an American astrophysicist and science writer best known for co-writing the landmark television series "Cosmos: A Personal Voyage" with Carl Sagan and Ann Druyan.
-
C.
Scott S. Sheppard
Scott S. Sheppard is an American astronomer known for discovering numerous small moons of the outer planets and distant objects in the Solar System.
-
D.
Chad Trujillo
Chad Trujillo is an American astronomer known for his role in the discovery of distant trans-Neptunian objects, including the dwarf planet Eris.
-
E.
Robin Chapman
Robin Chapman is a British screenwriter and novelist known for his work on films and television dramas, including the war film "Force 10 from Navarone."
- 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: Mark R. Showalter Target entity description: Mark R. Showalter is an American planetary astronomer known for discovering several moons and rings in the outer solar system and for his work on planetary ring dynamics.
-
A.
David C. Jewitt
David C. Jewitt is a British-American astronomer best known for co-discovering the first Kuiper Belt object beyond Pluto, helping to reveal the Kuiper Belt as a major component of the solar system.
-
B.
Steven Soter
Steven Soter is an American astrophysicist and science writer best known for co-writing the landmark television series "Cosmos: A Personal Voyage" with Carl Sagan and Ann Druyan.
-
C.
Scott S. Sheppard
Scott S. Sheppard is an American astronomer known for discovering numerous small moons of the outer planets and distant objects in the Solar System.
-
D.
Chad Trujillo
Chad Trujillo is an American astronomer known for his role in the discovery of distant trans-Neptunian objects, including the dwarf planet Eris.
-
E.
Robin Chapman
Robin Chapman is a British screenwriter and novelist known for his work on films and television dramas, including the war film "Force 10 from Navarone."
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
astronomer
ⓘ
human ⓘ planetary scientist ⓘ |
| awardReceived | Harold C. Urey Prize in Planetary Science ⓘ |
| birthPlace | United States of America ⓘ |
| citizenship | United States of America ⓘ |
| discovered |
Jupiter faint ring components
ⓘ
Jupiter moon Adrastea ⓘ
linked to:
Adrastea
Jupiter moon Metis ⓘ Neptune ring arcs ⓘ Pluto moon Styx ⓘ
linked to:
Styx (moon)
Saturn moon Pan ⓘ Uranus moon Cupid ⓘ Uranus moon Mab ⓘ |
| educatedAt |
Cornell University
ⓘ
Swarthmore College ⓘ |
| employer | SETI Institute ⓘ |
| fieldOfWork |
outer Solar System
ⓘ
planetary ring dynamics ⓘ planetary rings ⓘ planetary science ⓘ |
| gender | male ⓘ |
| hasAcademicAdvisor | Joseph Veverka ⓘ |
| hasAcademicDegree | PhD in Astronomy ⓘ |
| hasORCID | 0000-0002-XXXX-XXXX ⓘ |
| hasRole | lead of New Horizons Pluto system science planning team ⓘ |
| knownFor |
analysis of Hubble Space Telescope data
ⓘ
analysis of Voyager mission data ⓘ discoveries of planetary moons ⓘ discoveries of planetary rings ⓘ studies of planetary ring dynamics ⓘ |
| languageSpoken | English ⓘ |
| memberOf |
American Astronomical Society
ⓘ
Division for Planetary Sciences ⓘ |
| notablePublication |
papers on outer planet rings in Science journal
ⓘ
papers on planetary ring dynamics in Icarus journal ⓘ |
| notableWork |
research on Jupiter ring system
ⓘ
research on Neptune ring arcs ⓘ research on Saturn Encke Gap ringlets ⓘ research on Uranus rings ⓘ |
| occupation |
planetary astronomer
ⓘ
research scientist ⓘ |
| participatedIn |
Cassini mission ring science
ⓘ
New Horizons mission ⓘ
linked to:
New Horizons
|
| workLocation |
Mountain View, California
ⓘ
linked to:
Mountain View, California, United States
|
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: Mark R. Showalter Description of subject: Mark R. Showalter is an American planetary astronomer known for discovering several moons and rings in the outer solar system and for his work on planetary ring dynamics.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.