For decades, physicists have been hard at work trying to answer the universe's unanswered questions. In October 2016, they may have solved five of them in one fell swoop.
The Standard Model Of Particle Physics
Learn about the fundamental particles that make up everything in the universe—and the fundamental forces that govern them.
What Is Dark Matter?
We know it exists, but we don't know what it is.
Key Facts In This Video
The known universe consists of about 70% dark energy, 25% dark matter, and 5% visible matter. 00:08
Dark energy seems to be intrinsic to empty space, which has more energy than everything else in the universe combined. 03:45
One theory of dark energy postulates that it comes from virtual particles in empty space that form and disappear constantly. 04:47
Studying Particles At Fermilab
See what physicists are doing to answer the biggest questions of the universe.
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