Obs. : 2009-11-16
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.570e+11
Venus      3.515e+11
Earth      3.648e+11
Mars       3.564e+11
Jupiter    3.679e+11
Saturn     3.468e+11
Uranus     3.691e+11
Neptune    3.679e+11
Pluto      3.629e+11