Obs. : 2009-11-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.581e+11
Venus      3.578e+11
Earth      3.502e+11
Mars       3.513e+11
Jupiter    3.508e+11
Saturn     3.533e+11
Uranus     3.442e+11
Neptune    3.486e+11
Pluto      3.584e+11