Light blue dust and gas forms an egg shaped shell surrounding a bright white star in the center. There is an outer shell as well, also light blue, with some pink on the edges.

C22 – Caldwell 22 – Snowball Nebula

This image was taken using Hubble’s Wide Field and Planetary Camera 2 in 2000. Astronomers compared this image to earlier Hubble images of Caldwell 22 to study how the nebula expanded and changed.

Credits: NASA, ESA, and A. Hajian (University of Waterloo)
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Image CreditNASA, ESA, and A. Hajian (University of Waterloo)
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