Obs. : 2009-01-22
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.460e+11
Venus      3.440e+11
Earth      3.464e+11
Mars       3.460e+11
Jupiter    3.489e+11
Saturn     3.401e+11
Uranus     3.440e+11
Neptune    3.485e+11
Pluto      3.378e+11