them are, as shown counter-clockwise in the image, comets 9P/Tempel 1 ( Deep Impact ), 19P/Borrelly ( Deep Space 1 ), 81P/Wild (Wild 2) ( Stardust ), 103P/Hartley 2 ( Deep Impact/EPOXI ), and 1P/Halley ( Giotto ). Update: For another photo comparing the sizes of Comets Hartley 2 and Tempel