Obs. : 2019-12-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.065e+08
Venus      6.173e+08
Earth      6.086e+08
Mars       6.009e+08
Jupiter    6.153e+08
Saturn     6.175e+08
Uranus     6.078e+08
Neptune    6.106e+08
Pluto      6.175e+08