PhysicsMerging galaxies throw shade on alternative dark matter theory The rate of galaxies merging 2 billion years after the big bang is 5 to 10 times more than predicted by theories of modified Newtonian dynamics, and more in line with dark matter theories 51¶¯Âþ
Last WordThis week's new questions How tight are the lids on food jars supposed to be, and what happens when dark matter falls into a black hole? Send us your thoughts Regulars