Obs. : 2013-12-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.110e+11
Venus      4.073e+11
Earth      4.357e+11
Mars       4.054e+11
Jupiter    4.300e+11
Saturn     4.052e+11
Uranus     4.210e+11
Neptune    4.056e+11
Pluto      4.092e+11