Obs. : 2009-09-24
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.306e+11
Venus      3.306e+11
Earth      3.577e+11
Mars       3.398e+11
Jupiter    3.589e+11
Saturn     3.306e+11
Uranus     3.573e+11
Neptune    3.589e+11
Pluto      3.654e+11