Obs. : 2022-04-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.191e+08
Venus      7.700e+08
Earth      7.410e+08
Mars       7.700e+08
Jupiter    7.743e+08
Saturn     7.638e+08
Uranus     8.373e+08
Neptune    7.743e+08
Pluto      7.571e+08