A heat shield is a protective barrier designed to absorb, deflect, or dissipate heat. It is commonly used in various applications, including spacecraft, vehicles, and industrial equipment. The primary purpose of a heat shield is to prevent damage from extreme temperatures, ensuring the safety and functionality of the object it protects. In spacecraft, for example, heat shields are crucial during re-entry into the Earth's atmosphere. They are made from materials that can withstand high temperatures, such as carbon composites or ceramics. By managing heat effectively, heat shields help protect sensitive components and ensure a safe return to Earth.