Obs. : 2020-02-21
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.129e+08
Venus      5.873e+08
Earth      6.030e+08
Mars       6.199e+08
Jupiter    6.215e+08
Saturn     6.215e+08
Uranus     5.782e+08
Neptune    6.129e+08
Pluto      6.215e+08