A spaceship is stationed on Mars. How much energy must be expended on the spaceship to launch it out of the solar system ? Mass of the space ship = 1000 kg; mass of the sun = 2×10 30 kg; mass of mars = 6.4×10 23 kg; Radius of mars = 3395 km; Radius of the orbit of mars = 2.28 × 10^ 8 km G = 6.67× 10^-11 N m^ 2 kg^-2 .