Obs. : 2020-07-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.148e+08
Venus      6.283e+08
Earth      6.304e+08
Mars       6.140e+08
Jupiter    6.402e+08
Saturn     6.402e+08
Uranus     6.221e+08
Neptune    6.144e+08
Pluto      6.402e+08