Obs. : 2011-01-13
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.810e+11
Venus      3.780e+11
Earth      3.760e+11
Mars       3.848e+11
Jupiter    3.769e+11
Saturn     3.757e+11
Uranus     3.769e+11
Neptune    3.792e+11
Pluto      3.810e+11