Obs. : 2025-10-11
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.660e+08
Venus      8.407e+08
Earth      7.863e+08
Mars       8.660e+08
Jupiter    8.103e+08
Saturn     7.863e+08
Uranus     7.918e+08
Neptune    7.863e+08
Pluto      8.466e+08