Who is known as the father of Modern Aeronautics for proposing the use of rockets for space exploration?

Konstantin Tsiolkvosky is often referred to as the father of Modern Aeronautics primarily due to his pioneering work in astronautics and his theoretical foundations for rocket science. He was among the first to propose the concept of using rockets for space exploration and made significant contributions to the understanding of rocket propulsion. Tsiolkvosky's formulation of the rocket equation laid the groundwork for the future development of spacecraft, establishing essential principles such as the need for fuel and the concept of multi-stage rockets to achieve escape velocity from Earth's gravitational pull.

His visionary ideas, particularly in his work "The Exploration of Cosmic Space by Means of Reaction Devices," outlined the theoretical feasibility of human space travel and the engineering principles necessary for rocket design. This influential perspective on the potential of rockets for exploring outer space differentiates him in the field of aeronautics, highlighting his role in shaping the trajectory of modern space exploration.