Obs. : 2008-04-29
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.514e+11
Venus      3.527e+11
Earth      3.537e+11
Mars       3.455e+11
Jupiter    3.499e+11
Saturn     3.458e+11
Uranus     3.531e+11
Neptune    3.482e+11
Pluto      3.501e+11