Obs. : 2025-08-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.281e+08
Venus      8.369e+08
Earth      7.834e+08
Mars       8.038e+08
Jupiter    8.369e+08
Saturn     8.121e+08
Uranus     8.367e+08
Neptune    8.121e+08
Pluto      7.766e+08