Obs. : 2009-04-26 Planet Ly alpha Mercury 3.759e+11 Venus 3.638e+11 Earth 3.593e+11 Mars 3.638e+11 Jupiter 3.527e+11 Saturn 3.654e+11 Uranus 3.638e+11 Neptune 3.527e+11 Pluto 3.501e+11