| electron → CapableOf → move at the speed of light | 0.64 | |
| jet → CapableOf → move at the speed of light | 0.50 | |
| pulse → CapableOf → move at the speed of light | 0.41 | |
| observer → CapableOf → move at the speed of light | 0.37 | |
| cosmic ray → CapableOf → move at the speed of light | 0.36 |