In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the mass of our sun that occupy less space than our moon. Suppose that one of these black holes has a mass of 1 * 10³ suns and a radius equal to one-half the radius of our moon. What is the density of the black hole in g/cm³? The radius of our sun is 7.0 * 10⁵ km, and it has an average density of 1.4 * 10³ kg/m³. The diameter of the moon is 2.16 * 10³ mi.