Obs. : 2012-12-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.190e+11
Venus      4.154e+11
Earth      4.131e+11
Mars       4.259e+11
Jupiter    4.140e+11
Saturn     4.097e+11
Uranus     4.203e+11
Neptune    4.264e+11
Pluto      4.227e+11