What innovation is Roger Bacon known for in rocketry?

Roger Bacon is best known for his contributions to the early understanding of scientific principles and experimentation, particularly in the field of alchemy and explosives. His work involved improving forms of gunpowder, which greatly influenced the development of early projectile weapons and the understanding of explosive reactions.

While there were later advancements in rocketry, including liquid propellant rockets and space shuttles, Bacon’s innovations laid foundational principles for the use of gunpowder in propulsion systems that would ultimately lead to the development of modern rocketry. His emphasis on experimentation and observation marked a significant shift towards the scientific method, which is critical in the evolution of technology, including rocketry. This context underscores why improving gunpowder is a correct association with Bacon's contributions, as it reflects his role in the early stages of fire and propulsion science.