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Drawings by <n>Allan Sandage</n> from <n>The Hubble Atlas of Galaxies</n> (1961), illustrating galaxy classification.

<n>Oscillon 40</n> (1952) by artist and mathematician <n>Ben F. Laposky</n>.

Oscillons #10, #18, and #41 by <n>Ben F. Laposky</n> from <n>Recreational Mathematics Magazine</n>, 1963.

A photograph of <n>The Great Galaxy in Andromeda</n>, taken with a 48-inch telescope.

A negative HDR image of the <n>Andromeda Galaxy</n>. Credit: <n>NASA</n>, <n>ESA</n>, <n>Z. Levay</n>, <n>R. van der Marel</n> & <n>T. Hallas</n>.

The <n>Sombrero Galaxy (M104)</n>, a spiral galaxy located 31 million light years from Earth.

<n>Timeline of the Universe</n>, a diagram of the cosmos's expansion. By <n>NASA</n> and the <n>WMAP Science Team</n>.