[ad_1] [출처: NASA, ESA, W.M.켁 천문대, M 코스] [출처: NASA, ESA, W.M.켁 천문대, M 코스] In the final stage of unification of the galaxies, the black holes that were in the center …
Read More »When a galaxy collides, is it a black hole? First black hole just before the merger: the sporty shipbuilding
