Obs. : 2023-02-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.536e+08
Venus      8.253e+08
Earth      9.333e+08
Mars       8.988e+08
Jupiter    8.403e+08
Saturn     8.305e+08
Uranus     8.726e+08
Neptune    8.320e+08
Pluto      8.536e+08