Where To From Here?
Einstein’s general relativity is STILL our current theory of gravitation. It provides the framework for all current work.
- Example: Cosmology is understood in terms of the general theory. The expansion of the universe from an initial “big bang” around 14 billion years ago is a solution to Einstein’s equations for the evolution of the universe.
- Example: Stellar evolution in terms of gravitational collapse.
But what about other “forces”?
Attempts at “Grand Unification Theories” but none complete up to now
- Much Progress - see later - but unsolved!
- The major scientific goal of Einstein during the last half of his life was the search for the grand unification
- He “failed” -- but he pointed the way for future work!