Assertion: proper motion | /r/CapableOf | predict distance
Facets:
value: to the galaxy of 7.2±0.5 mpc
type: OTHER
Source sentences:
text: Measurements were made of the radial motion of objects in that galaxy moving directly toward and away from us, and assuming this same motion to apply to objects with only a proper motion, the observed proper motion predicts a distance to the galaxy of 7.2±0.5 Mpc.