The Big Bang wasn’t all it has been cracked up to be. Sure, it created the universe. But after the heat of the primordial fireball faded, the cosmos plunged into darkness. The universe was cold and black — a sea of hydrogen and helium atoms mixed with a mysterious dark form of matter making its presence known only by its gravity.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.