Obs. : 2023-04-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.901e+08
Venus      8.864e+08
Earth      9.223e+08
Mars       8.828e+08
Jupiter    8.966e+08
Saturn     9.027e+08
Uranus     8.864e+08
Neptune    9.039e+08
Pluto      8.945e+08