Obs. : 2008-07-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.486e+11
Venus      3.501e+11
Earth      3.516e+11
Mars       3.665e+11
Jupiter    3.616e+11
Saturn     3.608e+11
Uranus     3.450e+11
Neptune    3.489e+11
Pluto      3.629e+11