| gptkbp:instanceOf | gptkb:concept gptkb:Hypothetical_form_of_matter
 
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                                | gptkbp:detects | Gravitational effects 
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                                | gptkbp:discoveredBy | gptkb:Fritz_Zwicky 
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                                | gptkbp:estimatedPercentageOfUniverse | 27% 
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                                | gptkbp:explains | gptkb:Galaxy_rotation_curves gptkb:Gravitational_lensing
 gptkb:Large-scale_structure_of_the_universe
 Cosmic microwave background anisotropies
 
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                                | gptkbp:hasProperty | Interacts primarily via gravity Does not emit, absorb, or reflect light
 
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                                | gptkbp:influenced | Cosmic web structure Formation of galaxies
 Motion of galaxy clusters
 
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                                | gptkbp:notComposedOf | Baryonic matter 
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                                | gptkbp:notDetectedBy | gptkb:Electromagnetic_radiation 
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                                | gptkbp:notYetDirectlyDetected | True 
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                                | gptkbp:possibleConstituent | gptkb:Axions gptkb:Sterile_neutrinos
 gptkb:WIMPs
 gptkb:MACHOs
 
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                                | gptkbp:proposedBy | 1933 
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                                | gptkbp:relatedTo | gptkb:Dark_energy Ordinary matter
 
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                                | gptkbp:searchesConductedAt | gptkb:Large_Hadron_Collider gptkb:LUX_experiment
 gptkb:SuperCDMS_experiment
 gptkb:XENON1T_experiment
 
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                                | gptkbp:studiedBy | Cosmologists Astrophysicists
 
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                                | gptkbp:symbol | gptkb:DM 
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                                | gptkbp:bfsParent | gptkb:Armchair_Apocrypha 
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                                | gptkbp:bfsLayer | 6 
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                                | https://www.w3.org/2000/01/rdf-schema#label | Darkmatter 
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