Obs. : 2023-12-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.653e+08
Venus      8.623e+08
Earth      8.261e+08
Mars       8.773e+08
Jupiter    8.455e+08
Saturn     9.078e+08
Uranus     8.295e+08
Neptune    9.041e+08
Pluto      9.051e+08