A neutron star is the remaining core of giant stellar explosion, called a supernova. As a result of its formation, all the electrons and protons in a neutron star have been combined into neutrons. A neutron star is, effectively, a gigantic atomic nucleus consisting only of neutrons. Consider a neutron star with a mass that is 2.65 times the mass of the Sun (mSun = 1.99 ✕ 1030 kg). What is its radius (in km)? (Assume we can model it as a nucleus with a radiusr = r0A1/3.)km