Obs. : 2020-09-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.148e+08
Venus      6.500e+08
Earth      6.503e+08
Mars       6.503e+08
Jupiter    6.372e+08
Saturn     6.361e+08
Uranus     6.541e+08
Neptune    6.429e+08
Pluto      6.361e+08