Obs. : 2023-01-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.941e+08
Venus      8.918e+08
Earth      9.242e+08
Mars       9.307e+08
Jupiter    8.754e+08
Saturn     8.844e+08
Uranus     9.003e+08
Neptune    8.733e+08
Pluto      8.941e+08