Obs. : 2025-03-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.692e+08
Venus      8.692e+08
Earth      8.958e+08
Mars       8.572e+08
Jupiter    8.707e+08
Saturn     8.539e+08
Uranus     8.755e+08
Neptune    8.539e+08
Pluto      8.854e+08