Obs. : 2009-01-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.455e+11
Venus      3.477e+11
Earth      3.444e+11
Mars       3.500e+11
Jupiter    3.500e+11
Saturn     3.410e+11
Uranus     3.496e+11
Neptune    3.520e+11
Pluto      3.400e+11