Obs. : 2023-10-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    9.622e+08
Venus      9.400e+08
Earth      8.847e+08
Mars       9.628e+08
Jupiter    9.096e+08
Saturn     8.792e+08
Uranus     9.096e+08
Neptune    8.847e+08
Pluto      8.818e+08