The Black hole at the center of the milky way galaxy is estimated to contain about 4 million solar masses (mass of sun = 2 x 10^30 kg).
A) what is the Scwarzchild radius of our galaxy's black hole?
B) By what fraction would the march of Time be change ( compare to a distant observer) for a spaceship located at twice the Scwarzchild radius from this black hole's center?
C) How would this calculation be effected if the spaceship was in orbit about the black hole at this distance??