Obs. : 2025-05-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.439e+08
Venus      8.539e+08
Earth      8.164e+08
Mars       8.085e+08
Jupiter    8.119e+08
Saturn     8.542e+08
Uranus     8.180e+08
Neptune    8.539e+08
Pluto      8.293e+08