Obs. : 2008-05-23 Planet Ly alpha Mercury 3.884e+11 Venus 3.734e+11 Earth 3.807e+11 Mars 3.874e+11 Jupiter 3.650e+11 Saturn 3.899e+11 Uranus 3.695e+11 Neptune 3.666e+11 Pluto 3.726e+11