Obs. : 2009-12-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.678e+11
Venus      3.597e+11
Earth      3.496e+11
Mars       3.490e+11
Jupiter    3.607e+11
Saturn     3.487e+11
Uranus     3.543e+11
Neptune    3.607e+11
Pluto      3.678e+11