Obs. : 2025-03-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.109e+08
Venus      9.109e+08
Earth      8.523e+08
Mars       8.630e+08
Jupiter    8.567e+08
Saturn     9.259e+08
Uranus     8.600e+08
Neptune    9.259e+08
Pluto      9.330e+08