Obs. : 2009-12-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.617e+11
Venus      3.502e+11
Earth      3.620e+11
Mars       3.573e+11
Jupiter    3.654e+11
Saturn     3.462e+11
Uranus     3.644e+11
Neptune    3.654e+11
Pluto      3.556e+11