| − | The '''Hubble Constant''' is the constant of proportionality which gives the relation between apparent recessional [[velocity]] and distance in [[Hubble's law]]. | + | The '''Hubble Constant''' is the constant of proportionality which gives the relation between apparent recessional [[velocity]] and distance in [[Hubble's law]]. It was first published by [[Georges-Henri Lemaître]], and popularized by [[Edwin Hubble]]. |