Obs. : 2009-08-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.446e+11
Venus      3.408e+11
Earth      3.516e+11
Mars       3.458e+11
Jupiter    3.516e+11
Saturn     3.446e+11
Uranus     3.476e+11
Neptune    3.520e+11
Pluto      3.537e+11