Obs. : 2013-08-27
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.057e+11
Venus      3.825e+11
Earth      3.955e+11
Mars       4.263e+11
Jupiter    4.227e+11
Saturn     3.913e+11
Uranus     3.891e+11
Neptune    3.923e+11
Pluto      3.985e+11