An astronaut crawls on the moon against the background of the planet earthAn astronaut crawls on the moon against the background of the planet Earth
A spaceship in space against the background of a planetA spaceship in space against the background of a planet
Astronomy is the best science for studying planetsAstronomy is the best science for studying planets
Planets against the background of burning galaxiesPlanets against the background of burning galaxies
Небесное тело, вращающееся вокруг Солнца и получающее от него свет и тепло.