Complete the text with suitable prepositions.

Black holes are some of the strangest and most fascinating objects (a) --- space. They're extremely dense, (b) --- such strong gravitational attraction that not even light can escape their grasp. The Milky Way could contain (c) --- 100 million black holes, though detecting these gluttonous beasts is very difficult. (d) --- the heart of the Milky Way lies a super massive black hole. Sagittarius A. The colossal structure is (e)--- 4 million times the mass of the sun and lies approximately 26,000 lightyears away (f) --- Earth, according to a statement (g) --- NASA. The first image of a black hole was captured in 2019 (h) --- the Event Horizon Telescope (EHT) collaboration. The striking photo of the black hole (i) --- the center of the M87 galaxy 55 million light-years (j) -- Earth thrilled scientists around the world.