Obs. : 2009-08-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.424e+11
Venus      3.365e+11
Earth      3.488e+11
Mars       3.332e+11
Jupiter    3.488e+11
Saturn     3.424e+11
Uranus     3.395e+11
Neptune    3.488e+11
Pluto      3.468e+11