I don't know why I got millions reduced to thousands and billions to millions. I looked up the mass of M87 BH and I find 2.5 billion solar masses.
LC On Wednesday, April 10, 2019 at 7:12:13 PM UTC-5, John Clark wrote: > > > > On Wed, Apr 10, 2019 at 7:46 PM Lawrence Crowell <[email protected] > <javascript:>> wrote: > > >> > We will have to see what the Sgr*A image looks like of the Milky Way >> BH that is smaller, 104 thousand solar masses vs 2.5 million solar masses >> for M87*, but is closer only 27K light years, vs 55 million lyrs. >> > > > Sgr*A is 4.5 million solar masses, the Black Hole in M87 is 6.5 billion > solar masses. From the earth they would have almost the same size even > though one is much closer than the other. And any radio telescope can > observe M87 but only those in the southern hemisphere can see Sgr*A. There > is probably less obscuring dust between us and M87 too because we don't > have to look through the long axis of our galaxy to see it. > > John K Clark > > > > > > > >> -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
