Obs. : 2023-04-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.970e+08
Venus      8.986e+08
Earth      9.170e+08
Mars       9.046e+08
Jupiter    9.012e+08
Saturn     9.266e+08
Uranus     8.970e+08
Neptune    9.114e+08
Pluto      9.260e+08