A Best Collection of Universes – Stephan’s Quintet
Stephan’s Quintet comprises five galaxies: four physically interacting members (NGC 7317, 7318A, 7318B, and 7319), located about 290 million light‑years away, plus one foreground galaxy (NGC 7320) just ~40 million light‑years distant. NGC 7320 (upper-left in most images), being much closer, reveals individual resolved stars. Its disk glows with blue and pink star-forming clumps (H II regions) indicating active star birth. The four interacting galaxies display: Blue star clusters and pink […]