Albert Einstein was a prominent scientist known for his groundbreaking advances in the field of astrophysics. Best known for his theories of relativity, particularly the equation E=mc², Einstein fundamentally changed our understanding of space, time, and gravity. His work laid vital groundwork for modern physics and cosmology, influencing countless aspects of science and technology. Beyond theory, Einstein's contributions included the explanation of the photoelectric effect, which earned him a Nobel Prize in Physics in 1921. His legacy extends beyond his scientific achievements, as he became an enduring symbol of intellectual inquiry.