1. The problem asks whether a solar-powered engine could produce infinite energy for a spacecraft by harnessing energy from multiple suns across the universe. 2. In physics, energy cannot be created or destroyed, only converted from one form to another (law of conservation of energy). 3. A solar-powered engine converts solar radiation into usable energy, but the amount of energy it can produce depends on the intensity and availability of sunlight. 4. Even if multiple suns exist, the spacecraft can only harness energy from the suns it can physically reach or receive radiation from. 5. The energy received decreases with the square of the distance from the sun, following the inverse square law: $$I = \frac{P}{4\pi r^2}$$ where $I$ is intensity, $P$ is power output of the sun, and $r$ is distance. 6. Since the spacecraft cannot be simultaneously close to multiple suns, and energy conversion efficiency is less than 100%, it cannot produce infinite energy. 7. Therefore, while solar power can provide sustainable energy, it cannot produce infinite energy for a spacecraft. Final answer: No, a solar-powered engine cannot produce infinite energy for a spacecraft by using multiple suns across the universe.