Obs. : 2023-06-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.249e+08
Venus      9.243e+08
Earth      8.727e+08
Mars       9.165e+08
Jupiter    8.715e+08
Saturn     9.014e+08
Uranus     8.715e+08
Neptune    9.065e+08
Pluto      8.925e+08