Obs. : 2025-06-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.092e+08
Venus      8.010e+08
Earth      8.153e+08
Mars       8.059e+08
Jupiter    8.093e+08
Saturn     8.096e+08
Uranus     8.037e+08
Neptune    8.096e+08
Pluto      8.164e+08