Obs. : 2025-08-11
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.540e+08
Venus      8.557e+08
Earth      8.284e+08
Mars       8.518e+08
Jupiter    8.557e+08
Saturn     8.293e+08
Uranus     8.472e+08
Neptune    8.293e+08
Pluto      8.160e+08