Scientists discover new feature that makes the Milky Way unique
Only a millionth of simulated galaxies were located in a cosmological wall like the Local Sheet and had a mass like the Milky Way's.
This illustration shows a stage in the predicted merger between our Milky Way galaxy and the neighboring Andromeda galaxy, as it will unfold over the next several billion years. In this image, representing Earth's night sky in 3.75 billion years, Andromeda (left) fills the field of view(photo credit: NASA; ESA; Z. Levay and R. van der Marel, STScI; T. Hallas; and A. Mellinger)
