Obs. : 2009-07-23
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.516e+11
Venus      3.529e+11
Earth      3.520e+11
Mars       3.518e+11
Jupiter    3.489e+11
Saturn     3.743e+11
Uranus     3.420e+11
Neptune    3.489e+11
Pluto      3.632e+11