Obs. : 2009-08-25
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.463e+11
Venus      3.436e+11
Earth      3.487e+11
Mars       3.440e+11
Jupiter    3.487e+11
Saturn     3.463e+11
Uranus     3.466e+11
Neptune    3.487e+11
Pluto      3.535e+11