Obs. : 2013-05-05
Planet	Ly alpha (photons/cm^2/sec)
Mercury    4.168e+11
Venus      4.140e+11
Earth      4.578e+11
Mars       4.168e+11
Jupiter    4.118e+11
Saturn     4.624e+11
Uranus     4.279e+11
Neptune    4.358e+11
Pluto      4.512e+11