Obs. : 2026-04-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    7.718e+08
Venus      7.712e+08
Earth      8.010e+08
Mars       7.799e+08
Jupiter    7.523e+08
Saturn     7.948e+08
Uranus     7.712e+08
Neptune    7.948e+08
Pluto      8.362e+08