Obs. : 2009-05-19
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.473e+11
Venus      3.452e+11
Earth      3.531e+11
Mars       3.473e+11
Jupiter    3.452e+11
Saturn     3.493e+11
Uranus     3.455e+11
Neptune    3.452e+11
Pluto      3.484e+11