Since Einstein proved his theory of relativity by the bending of light though space-time,
and,
since Hubbel proved that the speed of light is constant (methods are another topic but let's assume it's fakt)
Doesn't it follow that light has mass since it curves along the gravitational forces?
If light did not have mass, would it not just continue into space without bending? Disregarding the gravitational effects on space-time?