Nearly half of the universe’s ordinary matter has been hiding — until now. Bursts of radio waves have illuminated the whereabouts of all ordinary matter, revealing its distribution between, around and ...

The universe is packed with riddles, but few are as stubborn or as fascinating as dark matter. First proposed in 1933 by astronomer Fritz Zwicky, this elusive substance refuses to play by the rules: ...

Now is a surreal time to be a dark matter researcher. Even as research funding is being cut by governments around the world, dark matter remains one of the biggest and most exciting open problems in ...