A vast, flat sheet of dark matter may solve the long-standing mystery of why the Andromeda galaxy is speeding toward us while our other neighbouring galaxies are moving away from us
A vast, flat sheet of dark matter may solve the long-standing mystery of why the Andromeda galaxy is speeding toward us while our other neighbouring galaxies are moving away from us
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Every major galaxy is speeding away from us, except one — and we finally know why
