Obs. : 2025-10-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.233e+08
Venus      7.907e+08
Earth      7.701e+08
Mars       8.233e+08
Jupiter    8.003e+08
Saturn     7.670e+08
Uranus     7.861e+08
Neptune    7.670e+08
Pluto      7.989e+08