the frontiers of physics

To some extent, he gave up a promising career at the frontiers of physics for wider pursuits.

The frontiers of physics have moved on.

It wasn't exactly on the frontiers of physics at the time, and he published in the most obscure journal he could find.

Physicists hope that answers to these and other puzzles will emerge from the handful of accelerator laboratories working at the frontiers of physics.

"Beyond Newton and Einstein: On the Frontiers of Physics," The New York Times Magazine, September 26, 1982.