Obs. : 2009-12-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.662e+11
Venus      3.589e+11
Earth      3.490e+11
Mars       3.449e+11
Jupiter    3.567e+11
Saturn     3.456e+11
Uranus     3.535e+11
Neptune    3.567e+11
Pluto      3.662e+11