Physics in Action
The Theory of Everything... Everything Alive!
Physicists like to explain a broad range of phenomena with a few simple mathematical laws.
Energetic Degenerates
If systems "seek" the lowest possible energy, why don't atomic electrons all cascade down into the ground state?
Deep Impact
Comets are relics from the origin of the solar system, carrying material about 4.5 billion years old.
Catch a Cosmic Microwave
A trio of recent findings on cosmic microwave background radiation lends strong support to the idea that the entire observable universe was once smaller than an atom and underwent a "super-charged" Big Bang.
The Little Constant that Couldn't?
Physicists measure the values of basic quantities like the speed of light and the charge of the electron. Cosmologists use the results in studies of the origin of the universe, some 12 billion years ago, and they assume the numbers have not changed over this time.