| 
                                    
                                        gptkbp:instanceOf
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Hypothetical_form_of_matter
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:affects
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Cosmic expansion
                                        
                                        
                                         
                                    
                                        
                                            
                                            Motion of galaxies in clusters
                                        
                                        
                                         
                                    
                                        
                                            
                                            Structure formation in the universe
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:alternativeTo
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Modified_Newtonian_Dynamics_(MOND)
                                        
                                         
                                    
                                        
                                            
                                            Cold dark matter
                                        
                                        
                                         
                                    
                                        
                                            
                                            Self-interacting dark matter
                                        
                                        
                                         
                                    
                                        
                                            
                                            Warm dark matter
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:detects
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Gravitational effects
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:discoveredBy
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Fritz_Zwicky
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:estimatedPercentageOfUniverse
                                    
                                 | 
                                
                                    
                                        
                                            
                                            27%
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:hasNo
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Strong_interaction
                                        
                                         
                                    
                                        
                                            
                                            Electric charge
                                        
                                        
                                         
                                    
                                        
                                            
                                            Confirmed direct detection
                                        
                                        
                                         
                                    
                                        
                                            
                                            Known particle in the Standard Model
                                        
                                        
                                         
                                    
                                        
                                            
                                            Weak interaction (in most models)
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:hasProperty
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Does not emit electromagnetic radiation
                                        
                                        
                                         
                                    
                                        
                                            
                                            Interacts primarily via gravity
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:inferenceMethod
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Bullet_Cluster_observations
                                        
                                         
                                    
                                        
                                            
                                            Cosmic microwave background measurements
                                        
                                        
                                         
                                    
                                        
                                            
                                            Galaxy cluster dynamics
                                        
                                        
                                         
                                    
                                        
                                            
                                            Large-scale structure surveys
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:notComposedOf
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Baryonic matter
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:notDetectedBy
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Direct observation
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:notToBeConfusedWith
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Dark_Energy
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:possibleConstituent
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Axions
                                        
                                         
                                    
                                        
                                            gptkb:Sterile_neutrinos
                                        
                                         
                                    
                                        
                                            gptkb:WIMPs
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:proposedBy
                                    
                                 | 
                                
                                    
                                        
                                            
                                            1933
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:relatedTo
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Dark_Energy
                                        
                                         
                                    
                                        
                                            gptkb:Lambda-CDM_model
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:soughtBy
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Large_Hadron_Collider
                                        
                                         
                                    
                                        
                                            gptkb:LUX_experiment
                                        
                                         
                                    
                                        
                                            gptkb:XENON1T_experiment
                                        
                                         
                                    
                                        
                                            gptkb:PandaX_experiment
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:studiedIn
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Cosmology
                                        
                                        
                                         
                                    
                                        
                                            
                                            Astrophysics
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:subjectOf
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Numerous scientific studies
                                        
                                        
                                         
                                    
                                        
                                            
                                            Ongoing experiments worldwide
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:symbol
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:DM
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:theorizedToExplain
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:Cosmic_microwave_background_anomalies
                                        
                                         
                                    
                                        
                                            gptkb:Galaxy_rotation_curves
                                        
                                         
                                    
                                        
                                            gptkb:Gravitational_lensing
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsParent
                                    
                                 | 
                                
                                    
                                        
                                            gptkb:WikiLeaks_Vault_7
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        gptkbp:bfsLayer
                                    
                                 | 
                                
                                    
                                        
                                            
                                            5
                                        
                                        
                                         
                                    
                                 | 
                            
                        
                            
                                | 
                                    
                                        https://www.w3.org/2000/01/rdf-schema#label
                                    
                                 | 
                                
                                    
                                        
                                            
                                            Dark Matter
                                        
                                        
                                         
                                    
                                 |