Obs. : 2008-07-17 Planet Ly alpha Mercury 3.702e+11 Venus 3.701e+11 Earth 3.723e+11 Mars 3.747e+11 Jupiter 3.816e+11 Saturn 3.747e+11 Uranus 3.690e+11 Neptune 3.723e+11 Pluto 3.811e+11