Obs. : 2019-12-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.998e+08
Venus      6.115e+08
Earth      6.030e+08
Mars       5.948e+08
Jupiter    6.091e+08
Saturn     6.098e+08
Uranus     6.013e+08
Neptune    6.070e+08
Pluto      6.098e+08