Obs. : 2025-09-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.638e+08
Venus      7.483e+08
Earth      8.626e+08
Mars       7.982e+08
Jupiter    7.922e+08
Saturn     8.475e+08
Uranus     8.104e+08
Neptune    8.475e+08
Pluto      8.871e+08