Obs. : 2019-12-30
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.079e+08
Venus      6.243e+08
Earth      6.056e+08
Mars       5.979e+08
Jupiter    6.079e+08
Saturn     6.223e+08
Uranus     6.068e+08
Neptune    6.195e+08
Pluto      6.223e+08