What Did Albert Einstein Discover?

Einstein discovered the theory of realitivity and the mass energy equivalence, e = mc2.
E = mc2 means energy = mass multiplied by the speed of light squared. This formula led to atomic bombs and nuclear power. With this formula you could power New York City for months from a gallon of water.

He discovered that objects bended space and light could travel around those objects

Hope this link will be more helpful to you to understand the contribution of Einstein to the science - en.wikipedia.org