Obs. : 2019-12-06
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.030e+08
Venus      6.261e+08
Earth      6.084e+08
Mars       6.014e+08
Jupiter    6.261e+08
Saturn     6.278e+08
Uranus     6.057e+08
Neptune    6.139e+08
Pluto      6.278e+08