Obs. : 2009-11-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.605e+11
Venus      3.573e+11
Earth      3.482e+11
Mars       3.503e+11
Jupiter    3.534e+11
Saturn     3.513e+11
Uranus     3.485e+11
Neptune    3.515e+11
Pluto      3.608e+11