Obs. : 2013-05-01
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.260e+11
Venus      4.280e+11
Earth      4.694e+11
Mars       4.260e+11
Jupiter    4.337e+11
Saturn     4.821e+11
Uranus     4.307e+11
Neptune    4.273e+11
Pluto      4.535e+11