nebulaExpansionVelocity
P132322
predicate
Indicates the speed at which a nebula is expanding outward from its center over time.
Observed surface forms (1)
- expansionVelocity ×2
Sample triples (4)
| Subject | Object |
|---|---|
| Helix Nebula | about 20 km/s via predicate surface "expansionVelocity" ⓘ |
| Messier 1 | about 1500 km/s via predicate surface "expansionVelocity" ⓘ |
| Messier 57 | about 20–30 km/s ⓘ |
| Ring Nebula | about 20–30 km/s ⓘ |