Obs. : 2025-10-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.584e+08
Venus      8.061e+08
Earth      8.025e+08
Mars       8.584e+08
Jupiter    7.933e+08
Saturn     8.025e+08
Uranus     7.965e+08
Neptune    8.025e+08
Pluto      8.479e+08