Obs. : 2023-04-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.811e+08
Venus      8.773e+08
Earth      9.063e+08
Mars       8.753e+08
Jupiter    8.922e+08
Saturn     9.076e+08
Uranus     8.811e+08
Neptune    9.079e+08
Pluto      8.886e+08