Obs. : 2025-10-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.572e+08
Venus      8.452e+08
Earth      8.330e+08
Mars       8.572e+08
Jupiter    8.459e+08
Saturn     8.263e+08
Uranus     8.498e+08
Neptune    8.263e+08
Pluto      8.202e+08