Obs. : 2025-10-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.961e+08
Venus      7.938e+08
Earth      8.376e+08
Mars       7.961e+08
Jupiter    8.238e+08
Saturn     8.361e+08
Uranus     8.295e+08
Neptune    8.361e+08
Pluto      8.406e+08