Obs. : 2023-07-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.438e+08
Venus      9.403e+08
Earth      9.620e+08
Mars       9.403e+08
Jupiter    9.473e+08
Saturn     9.576e+08
Uranus     9.503e+08
Neptune    9.540e+08
Pluto      9.676e+08