Physicists don’t know where most of the universe’s apparent mass has gone, and attempts to find it have so far failed. But a proposed particle born out of the universe’s chaotic first moments may provide a candidate and a reasonable way to look for it.
The universe began with a bang—and things immediately got weird.
Stephen Hawking passed away yesterday in his home at age 76. Hawking popularised the deepest questions of the universe and became a pop culture icon thanks to his writing and work. His personality and ideas had a profound impact on scientists and science fans alike.