Obs. : 2020-11-03
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.510e+08
Venus      6.533e+08
Earth      6.624e+08
Mars       6.630e+08
Jupiter    6.637e+08
Saturn     6.637e+08
Uranus     6.624e+08
Neptune    6.671e+08
Pluto      6.637e+08