Obs. : 2009-06-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.548e+11
Venus      3.528e+11
Earth      3.489e+11
Mars       3.454e+11
Jupiter    3.430e+11
Saturn     3.710e+11
Uranus     3.416e+11
Neptune    3.430e+11
Pluto      3.591e+11