Obs. : 2023-04-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.846e+08
Venus      8.969e+08
Earth      8.783e+08
Mars       8.958e+08
Jupiter    8.715e+08
Saturn     8.492e+08
Uranus     8.846e+08
Neptune    8.652e+08
Pluto      8.420e+08