Obs. : 2023-10-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.612e+08
Venus      9.299e+08
Earth      8.700e+08
Mars       9.595e+08
Jupiter    9.031e+08
Saturn     8.629e+08
Uranus     9.031e+08
Neptune    8.653e+08
Pluto      8.715e+08