Obs. : 2020-08-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.394e+08
Venus      6.557e+08
Earth      6.534e+08
Mars       6.598e+08
Jupiter    6.506e+08
Saturn     6.506e+08
Uranus     6.622e+08
Neptune    6.557e+08
Pluto      6.506e+08