2018年USAAAO短问题第10道
来自astro-init
英文题目
10. [5 pt] Mars orbits the Sun at an average distance of $$2.28 × 10^{11} m$$ and has a radius of $$3.39 × 10^6 m$$. The Sun has a luminosity of $$3.828 × 10^{26} W$$. How much solar energy falls on the surface of Mars each second? Ignore any effects of Mars’ thin atmosphere.
