The nearly edge-on galaxy NGC 5746 is partially obscured invisible-lightphotographs, making accurate classification impossible. This image fromtheSpitzer Space Telescope reveals the galaxy's true nature, showing adramaticring of warm dust surrounding the galaxy's bright nucleus. JPEG (83K) High Resolution JPEG (1.1M)
	The starburst galaxy NGC 1961 has one bright spiral arm wrapped tightlyaround the nucleus. This Spitzer Space Telescope image uncovered manyfainter arms, giving the galaxy the appearance of a nautilus shell. Redknots of warm dust mark the birthplaces of new stars, which are forming atarate more than 10 times higher than in the Milky Way. JPEG (568K)
	Infrared observations by the Spitzer Space Telescope may lead to a newwayof classifying galaxies. Spitzer's keen vision can detect hiddenstructuressuch as dusty spiral arms or rings.Credit:M.A. Pahre, M.L.N. Ashby, G.G. Fazio, and S.P. Willner (SAO) JPEG (71K) High Resolution JPEG (1.4M)

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