Obs. : 2025-06-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.906e+08
Venus      7.900e+08
Earth      8.039e+08
Mars       7.935e+08
Jupiter    7.925e+08
Saturn     8.125e+08
Uranus     7.900e+08
Neptune    8.125e+08
Pluto      8.039e+08