Obs. : 2019-12-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    6.062e+08
Venus      6.154e+08
Earth      6.086e+08
Mars       5.986e+08
Jupiter    6.122e+08
Saturn     6.147e+08
Uranus     6.061e+08
Neptune    6.115e+08
Pluto      6.147e+08