Galaxies
Nighttime Sky View of Future Galaxy Merger: 5.1 Billion Years
May 31, 2012 · NASA · M31, NGC 224, Andromeda Galaxy
Zoom to full resolution See where it is in the 3D sky Original on NASA ↗
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.
