Obs. : 2009-07-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.486e+11
Venus      3.411e+11
Earth      3.462e+11
Mars       3.495e+11
Jupiter    3.444e+11
Saturn     3.639e+11
Uranus     3.395e+11
Neptune    3.444e+11
Pluto      3.545e+11