Obs. : 2008-08-07
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.415e+11
Venus      3.494e+11
Earth      3.457e+11
Mars       3.548e+11
Jupiter    3.533e+11
Saturn     3.494e+11
Uranus     3.398e+11
Neptune    3.457e+11
Pluto      3.555e+11