Obs. : 2023-08-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.999e+08
Venus      8.795e+08
Earth      8.872e+08
Mars       8.999e+08
Jupiter    9.109e+08
Saturn     8.855e+08
Uranus     9.109e+08
Neptune    8.872e+08
Pluto      8.905e+08