Obs. : 2009-12-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.699e+11
Venus      3.526e+11
Earth      3.514e+11
Mars       3.449e+11
Jupiter    3.695e+11
Saturn     3.374e+11
Uranus     3.648e+11
Neptune    3.695e+11
Pluto      3.606e+11