Obs. : 2009-10-02
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.495e+11
Venus      3.495e+11
Earth      3.509e+11
Mars       3.554e+11
Jupiter    3.517e+11
Saturn     3.470e+11
Uranus     3.509e+11
Neptune    3.517e+11
Pluto      3.571e+11