Obs. : 2009-12-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.669e+11
Venus      3.582e+11
Earth      3.458e+11
Mars       3.424e+11
Jupiter    3.594e+11
Saturn     3.403e+11
Uranus     3.529e+11
Neptune    3.594e+11
Pluto      3.669e+11