Wallace Thornhill is an Australian physicist known for his work in the field of plasma physics and his advocacy of the Electric Universe theory. He argues that electricity plays a significant role in shaping the universe, challenging traditional views of astrophysics that focus primarily on gravity. Thornhill has co-authored several books and articles, promoting the idea that many cosmic phenomena can be explained through electrical interactions rather than gravitational forces. His theories have sparked interest and debate within the scientific community, particularly among those who explore alternative explanations for cosmic events.