Obs. : 2012-08-04
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.671e+11
Venus      4.073e+11
Earth      4.297e+11
Mars       4.089e+11
Jupiter    4.109e+11
Saturn     4.089e+11
Uranus     4.229e+11
Neptune    4.272e+11
Pluto      4.314e+11