Astronomers using the Hubble Space Telescope deduced the presence of an extremely massive core in the distant galaxy M87, so dense that it could be a black hole (from which no light escapes). They did this by measuring the speed of gas clouds orbiting the core to be 790 km/s at a distance of 60 light-years (=5.7×10ˆ17m) from the core. a.)Deduce the mass of the core.

b.)compare it to the mass of out sun