Obs. : 2012-07-31
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.765e+11
Venus      3.941e+11
Earth      4.430e+11
Mars       4.441e+11
Jupiter    3.941e+11
Saturn     4.441e+11
Uranus     4.258e+11
Neptune    4.334e+11
Pluto      4.476e+11