Nighttime Sky View of Future Galaxy Merger: 5.1 Billion Years

Nighttime Sky View of Future Galaxy Merger: 5.1 Billion Years
Nighttime Sky View of Future Galaxy Merger: 5.1 Billion Years During the second close passage, the cores of the Milky Way and Andromeda appear as a pair of bright lobes. Star-forming nebulae are much less prominent because the interstellar gas and dust has been significantly decreased by previous bursts of star formation. NASA, ESA, Z. Levay and R. van der Marel (STScI), T. Hallas, and A. Mellinger