For 10 points, name this American astronomer who is the namesake of an optical space telescope launched by NASA in 1990.
The deceleration parameter is equal to one plus the time derivative of a value named for this scientist divided by that same value squared. That value named for him is equal to the time derivative of the cosmic scale factor divided by the scale factor. The age of the universe can be approximated as the inverse of his namesake (*) constant. His namesake law states that the recessional velocity of a galaxy is equal to its distance from us multiplied by his namesake constant. For 10 points, name this American astronomer who is the namesake of an optical space telescope launched by NASA in 1990.
The deceleration parameter is equal to one plus the time derivative of a value named for this scientist divided by that same value squared.
Edwin Hubble