Obs. : 2020-10-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.397e+08
Venus      6.450e+08
Earth      6.531e+08
Mars       6.543e+08
Jupiter    6.849e+08
Saturn     6.851e+08
Uranus     6.531e+08
Neptune    6.654e+08
Pluto      6.849e+08