Obs. : 2020-04-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.395e+08
Venus      6.051e+08
Earth      6.236e+08
Mars       6.343e+08
Jupiter    6.343e+08
Saturn     6.343e+08
Uranus     6.262e+08
Neptune    6.395e+08
Pluto      6.343e+08