Obs. : 2023-05-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.682e+08
Venus      8.938e+08
Earth      8.862e+08
Mars       8.938e+08
Jupiter    8.655e+08
Saturn     8.806e+08
Uranus     8.682e+08
Neptune    8.750e+08
Pluto      8.673e+08