Obs. : 2009-10-20
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.343e+11
Venus      3.347e+11
Earth      3.570e+11
Mars       3.471e+11
Jupiter    3.622e+11
Saturn     3.347e+11
Uranus     3.591e+11
Neptune    3.622e+11
Pluto      3.625e+11