Obs. : 2009-02-26
Planet	Ly alpha (photons/cm^2/sec)
Mercury    3.473e+11
Venus      3.517e+11
Earth      3.452e+11
Mars       3.473e+11
Jupiter    3.473e+11
Saturn     3.441e+11
Uranus     3.544e+11
Neptune    3.531e+11
Pluto      3.407e+11