Obs. : 2008-09-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.479e+11
Venus      3.554e+11
Earth      3.453e+11
Mars       3.531e+11
Jupiter    3.551e+11
Saturn     3.439e+11
Uranus     3.453e+11
Neptune    3.485e+11
Pluto      3.570e+11