Obs. : 2008-12-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.468e+11
Venus      3.489e+11
Earth      3.474e+11
Mars       3.459e+11
Jupiter    3.489e+11
Saturn     3.423e+11
Uranus     3.474e+11
Neptune    3.487e+11
Pluto      3.468e+11