Obs. : 2026-10-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.455e+08
Venus      7.492e+08
Earth      7.748e+08
Mars       8.059e+08
Jupiter    8.059e+08
Saturn     7.748e+08
Uranus     7.973e+08
Neptune    7.748e+08
Pluto      7.405e+08