Craters reveal valuable information about the composition of a planet's surface and subsurface. Measuring the number of impacts also allows scientists to estimate a surface's age.
Craters reveal valuable information about the composition of a planet's surface and subsurface. Measuring the number of impacts also allows scientists to estimate a surface's age.
陨石坑能反映出关于行星地表和地下的有价值的信息。碰撞的次数也能让科学家们估计地表年代。