Obs. : 2023-07-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.828e+08
Venus      8.838e+08
Earth      9.188e+08
Mars       8.838e+08
Jupiter    8.650e+08
Saturn     9.084e+08
Uranus     8.630e+08
Neptune    9.001e+08
Pluto      9.150e+08