Obs. : 2009-08-15
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.409e+11
Venus      3.351e+11
Earth      3.470e+11
Mars       3.321e+11
Jupiter    3.470e+11
Saturn     3.409e+11
Uranus     3.406e+11
Neptune    3.446e+11
Pluto      3.480e+11