great questions. Keep them coming! To submit your own question, please type it in the box at the bottom of the window and click the 'Ask' button on the right side of the box. Thanks for your patience as we answer your questions. Betelgeuse: So, why do all of these black holes exist? Were there lots of deaths of stars in the centers of these galaxies? Kevin: That's one hypothesis. One way to make these baby black holes is from the death of one of the first generation of stars which were much more massive than today's stars. The other is when a disk of gas in a young galaxy collapses straight to a black hole. mkjohnst: Is it possible for one black hole to orbit another black hole? I suppose this is related to the question about how black holes merge riyanatarajan: Great question! yes black holes do orbit around each other, they get captured and eventually merge. This happens fairly routinely in the Universe when galaxies merge since most galaxies harbor a central black hole. And in their dying gasps black holes emit gravitational radiation Janus: Can galaxies form without black holes? Ezequiel: great question! there are some galaxies without black holes... but in general, and particularly in the near Universe all massive galaxies have black holes... At large distances, in the early Universe, not all galaxies need to have a black hole eolijah: Jason, do you think that black holes like apple pie? Kevin: Who doesn't like