Obs. : 2019-12-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    5.880e+08
Venus      6.012e+08
Earth      5.935e+08
Mars       5.797e+08
Jupiter    5.988e+08
Saturn     5.989e+08
Uranus     5.898e+08
Neptune    5.999e+08
Pluto      5.989e+08