What are some of the major scientific contributions of Albert Einstein?

His theory of relativity transformed theoretical physics and astronomy during the 20th century. 'GPS', 'GLONASS', and the upcoming 'Galileo' must allow for relativistic effects such as the Earth's gravitational field in order to operate with precision.

In 1905, he published a paper with the idea that light energy is carried in discrete quantized packages to explain experimental data from the photoelectric effect, which aided the development of quantum mechanics.

Overall, he published more than 300 scientific papers, plus more than 150 non-scientific works.