Obs. : 2024-06-02 Planet Ly alpha (photons/cm^2/sec) Mercury 9.871e+08 Venus 9.871e+08 Earth 9.932e+08 Mars 9.371e+08 Jupiter 9.871e+08 Saturn 9.382e+08 Uranus 9.735e+08 Neptune 9.369e+08 Pluto 9.749e+08