Obs. : 2025-06-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.073e+08
Venus      7.861e+08
Earth      8.215e+08
Mars       8.096e+08
Jupiter    7.958e+08
Saturn     8.144e+08
Uranus     7.861e+08
Neptune    8.144e+08
Pluto      8.215e+08