Obs. : 2008-07-09
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.451e+11
Venus      3.520e+11
Earth      3.464e+11
Mars       3.633e+11
Jupiter    3.523e+11
Saturn     3.633e+11
Uranus     3.402e+11
Neptune    3.441e+11
Pluto      3.528e+11