Obs. : 2012-05-17
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.206e+11
Venus      4.184e+11
Earth      4.504e+11
Mars       4.368e+11
Jupiter    4.206e+11
Saturn     4.525e+11
Uranus     4.344e+11
Neptune    4.322e+11
Pluto      4.489e+11