Obs. : 2009-08-14
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.347e+11
Venus      3.288e+11
Earth      3.462e+11
Mars       3.291e+11
Jupiter    3.462e+11
Saturn     3.347e+11
Uranus     3.358e+11
Neptune    3.394e+11
Pluto      3.461e+11