Spitzer Space Telescope Observations of the Nucleus of Comet 103P/Hartley 2 Posted on June 26, 2014 by UHNAI Webmaster in Lisse, C.M., Y.R. Fernandez, W.T. Reach, J.M. Bauer, M.F. A'Hearn, T.L. Farnham, O. Groussin, M.J. Belton, K.J. Meech, C.D. Snodgrass (). Spitzer Space Telescope Observations of the Nucleus of Comet 103P/Hartley 2. , 121,