Obs. : 2019-12-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.120e+08
Venus      6.292e+08
Earth      6.091e+08
Mars       6.096e+08
Jupiter    6.292e+08
Saturn     6.304e+08
Uranus     6.055e+08
Neptune    6.150e+08
Pluto      6.304e+08