NICER Neutron star Interior Composition Explorer

E79022

X-ray astronomy instrument astrophysics observatory space telescope

NICER (Neutron star Interior Composition Explorer) is an X-ray astronomy instrument mounted on the International Space Station that studies neutron stars to probe their ultra-dense interiors and extreme physics.

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All labels observed (5)

Label	Occurrences
NICER	8
Neutron star Interior Composition Explorer	5
NICER mission	2
NICER Neutron star Interior Composition Explorer canonical	1
NICER X-ray timing instrument	1

How this entity was disambiguated

This entity first appeared as the object of triple T633387 — 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: NICER Neutron star Interior Composition Explorer
Context triple: [NASA Astrophysics Division, overseesMission, NICER Neutron star Interior Composition Explorer]

A. Kepler space telescope
The Kepler space telescope was a NASA space observatory designed to discover Earth-size exoplanets by continuously monitoring the brightness of over 150,000 stars.
B. BepiColombo mission
The BepiColombo mission is a joint ESA–JAXA spacecraft mission designed to study the planet Mercury’s composition, magnetic field, and environment through dual orbiters.
C. James Webb Space Telescope
The James Webb Space Telescope is a large, space-based observatory designed to study the universe in infrared light, revealing the formation of the first galaxies, stars, and planetary systems with unprecedented sensitivity and resolution.
D. Near Infrared Imager and Slitless Spectrograph
The Near Infrared Imager and Slitless Spectrograph (NIRISS) is a James Webb Space Telescope instrument designed for high-sensitivity near-infrared imaging and spectroscopy, particularly suited for exoplanet characterization and studies of distant galaxies.
E. NEOSSat
NEOSSat is a Canadian microsatellite designed to detect and track near-Earth asteroids and space debris from orbit.
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: NICER Neutron star Interior Composition Explorer
Target entity description: NICER (Neutron star Interior Composition Explorer) is an X-ray astronomy instrument mounted on the International Space Station that studies neutron stars to probe their ultra-dense interiors and extreme physics.

A. Kepler space telescope
The Kepler space telescope was a NASA space observatory designed to discover Earth-size exoplanets by continuously monitoring the brightness of over 150,000 stars.
B. BepiColombo mission
The BepiColombo mission is a joint ESA–JAXA spacecraft mission designed to study the planet Mercury’s composition, magnetic field, and environment through dual orbiters.
C. James Webb Space Telescope
The James Webb Space Telescope is a large, space-based observatory designed to study the universe in infrared light, revealing the formation of the first galaxies, stars, and planetary systems with unprecedented sensitivity and resolution.
D. Near Infrared Imager and Slitless Spectrograph
The Near Infrared Imager and Slitless Spectrograph (NIRISS) is a James Webb Space Telescope instrument designed for high-sensitivity near-infrared imaging and spectroscopy, particularly suited for exoplanet characterization and studies of distant galaxies.
E. NEOSSat
NEOSSat is a Canadian microsatellite designed to detect and track near-Earth asteroids and space debris from orbit.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	X-ray astronomy instrument ⓘ astrophysics observatory ⓘ space telescope ⓘ
abbreviation	NICER ⓘ linked to: NICER Neutron star Interior Composition Explorer
demonstrates	X-ray pulsar-based navigation ⓘ
developedBy	NASA Goddard Space Flight Center ⓘ linked to: Goddard Space Flight Center
developedInCollaborationWith	MIT Kavli Institute for Astrophysics and Space Research ⓘ linked to: Kavli Institute for Astrophysics and Space Research universities and research institutions ⓘ
energyRange	0.2–12 keV ⓘ
fieldOfView	approximately 6 arcminutes ⓘ
fullName	Neutron star Interior Composition Explorer ⓘ linked to: NICER Neutron star Interior Composition Explorer
hasComponent	GPS receiver ⓘ X-ray Timing Instrument ⓘ array of X-ray concentrator optics ⓘ focal plane module with silicon drift detectors ⓘ pointing system ⓘ star tracker ⓘ
hostPlatform	International Space Station ⓘ linked to: International Space Station program
launchedFrom	Kennedy Space Center ⓘ
launchedOn	2017-06-03 ⓘ
launchedTo	International Space Station ⓘ linked to: International Space Station program
launchVehicle	SpaceX Falcon 9 ⓘ linked to: Falcon 9 rocket
missionType	Explorer-class mission payload ⓘ observatory ⓘ
mountedOn	ISS ExPRESS Logistics Carrier 2 ⓘ International Space Station ⓘ linked to: International Space Station program
observes	X-ray binaries ⓘ accreting neutron stars ⓘ magnetars ⓘ rotation-powered pulsars ⓘ
operatedBy	NASA ⓘ NASA Goddard Space Flight Center ⓘ linked to: Goddard Space Flight Center
orbitsWith	International Space Station ⓘ linked to: International Space Station program
partOf	NASA Explorers Program ⓘ linked to: NASA Explorer Program
primaryScienceTarget	neutron stars ⓘ pulsars ⓘ
scientificGoal	measure neutron star masses and radii ⓘ probe ultra-dense matter in neutron stars ⓘ test strong-field general relativity ⓘ
SEXTANTFullName	Station Explorer for X-ray Timing and Navigation Technology ⓘ
studies	X-ray emission from compact objects ⓘ equation of state of ultra-dense matter ⓘ extreme gravity ⓘ neutron star interiors ⓘ
supportsExperiment	SEXTANT ⓘ
timeResolution	about 100 nanoseconds ⓘ
uses	X-ray spectroscopy ⓘ X-ray timing ⓘ
wavelengthRange	soft X-ray band ⓘ

How these facts were elicited