Obs. : 2009-12-11
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.695e+11
Venus      3.553e+11
Earth      3.586e+11
Mars       3.543e+11
Jupiter    3.742e+11
Saturn     3.406e+11
Uranus     3.714e+11
Neptune    3.742e+11
Pluto      3.623e+11