APXS (Alpha Particle X-ray Spectrometer)
E1203686
UNEXPLORED
The APXS (Alpha Particle X-ray Spectrometer) is a scientific instrument used on Mars rovers to determine the elemental composition of rocks and soil by bombarding them with alpha particles and X-rays and analyzing the emitted spectra.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Alpha Particle X-ray Spectrometer | 3 |
| APXS (Alpha Particle X-ray Spectrometer) canonical | 1 |
| Alpha Proton X-ray Spectrometer | 1 |
| Sojourner rover APXS | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T16258379 — 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: APXS (Alpha Particle X-ray Spectrometer) Context triple: [MSL, hasInstrument, APXS (Alpha Particle X-ray Spectrometer)]
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A.
Gamma-Ray and Neutron Spectrometer
The Gamma-Ray and Neutron Spectrometer is a scientific instrument designed to measure gamma rays and neutrons to determine the elemental composition of a planetary surface.
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B.
SAM (Sample Analysis at Mars)
SAM (Sample Analysis at Mars) is a suite of scientific instruments on NASA's Curiosity rover designed to analyze Martian rocks, soil, and atmosphere for their chemical and isotopic composition, including potential organic compounds.
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C.
Miniature Thermal Emission Spectrometer
The Miniature Thermal Emission Spectrometer is a compact infrared instrument used on NASA’s Mars Exploration Rovers to analyze the mineral composition and thermal properties of Martian rocks and soil.
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D.
SuperCam
SuperCam is a remote-sensing instrument on NASA's Perseverance Mars rover that uses lasers, cameras, and spectrometers to analyze the composition of Martian rocks and soil from a distance.
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E.
Mars Environmental Dynamics Analyzer
The Mars Environmental Dynamics Analyzer is a suite of weather instruments aboard NASA's Perseverance rover that measures atmospheric conditions and dust on the Martian surface.
- 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: APXS (Alpha Particle X-ray Spectrometer) Target entity description: The APXS (Alpha Particle X-ray Spectrometer) is a scientific instrument used on Mars rovers to determine the elemental composition of rocks and soil by bombarding them with alpha particles and X-rays and analyzing the emitted spectra.
-
A.
Gamma-Ray and Neutron Spectrometer
The Gamma-Ray and Neutron Spectrometer is a scientific instrument designed to measure gamma rays and neutrons to determine the elemental composition of a planetary surface.
-
B.
SAM (Sample Analysis at Mars)
SAM (Sample Analysis at Mars) is a suite of scientific instruments on NASA's Curiosity rover designed to analyze Martian rocks, soil, and atmosphere for their chemical and isotopic composition, including potential organic compounds.
-
C.
Miniature Thermal Emission Spectrometer
The Miniature Thermal Emission Spectrometer is a compact infrared instrument used on NASA’s Mars Exploration Rovers to analyze the mineral composition and thermal properties of Martian rocks and soil.
-
D.
SuperCam
SuperCam is a remote-sensing instrument on NASA's Perseverance Mars rover that uses lasers, cameras, and spectrometers to analyze the composition of Martian rocks and soil from a distance.
-
E.
Mars Environmental Dynamics Analyzer
The Mars Environmental Dynamics Analyzer is a suite of weather instruments aboard NASA's Perseverance rover that measures atmospheric conditions and dust on the Martian surface.
- F. None of above. chosen
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Alpha Particle X-ray Spectrometer
this entity surface form:
Alpha Particle X-ray Spectrometer
this entity surface form:
Alpha Particle X-ray Spectrometer
this entity surface form:
Sojourner rover APXS
this entity surface form:
Alpha Proton X-ray Spectrometer