Obs. : 2009-12-18
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.594e+11
Venus      3.524e+11
Earth      3.670e+11
Mars       3.659e+11
Jupiter    3.590e+11
Saturn     3.569e+11
Uranus     3.568e+11
Neptune    3.590e+11
Pluto      3.569e+11