Obs. : 2008-04-27 Planet Ly alpha Mercury 3.698e+11 Venus 3.718e+11 Earth 3.791e+11 Mars 3.655e+11 Jupiter 3.708e+11 Saturn 3.721e+11 Uranus 3.701e+11 Neptune 3.666e+11 Pluto 3.725e+11