" For 10 points, identify this American astronomer, the namesake of a NASA space telescope.
A quantity named for this man can be calculated by using redshift of a distant object to derive its radial velocity and then dividing by the distance to that object. This man discovered Cepheid variables in Andromeda and Triangulum, which proved that there were galaxies outside the Milky Way. His namesake (*) constant is estimated by one over the age of the universe. This man developed a tuning-fork classification scheme for galaxies. His law models the expansion of the universe, which he "discovered." For 10 points, identify this American astronomer, the namesake of a NASA space telescope.
A quantity named for this man can be calculated by using redshift of a distant object to derive its radial velocity and then dividing by the distance to that object.
Edwin [Powell] Hubble