Obs. : 2008-09-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.494e+11
Venus      3.494e+11
Earth      3.524e+11
Mars       3.494e+11
Jupiter    3.577e+11
Saturn     3.414e+11
Uranus     3.519e+11
Neptune    3.532e+11
Pluto      3.589e+11