A rusty-orange background is dotted with dark clouds. One large, dark cloud at upper right, two medium-sized dark clouds at the bottom; one left, the other right, of center. The upper left corner is blacked-out in a step pattern.

C100 – Caldwell 100

Caldwell 100 (also called Collinder 249) is a loose collection of stars, known as an open cluster, that’s embedded within a large nebula (named IC 2944) about 6,000 light-years away from Earth. The reddish glow of hydrogen gas surrounding the cluster is typical of emission nebulae found in massive star-forming regions. This Hubble image, taken in visible light using the Wide Field and Planetary Camera 2, shows a small portion of this region.

Credits: NASA and the Hubble Heritage Team (STScI/AURA); Acknowledgment: Bo Reipurth (University of Hawaii)
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Image CreditNASA and the Hubble Heritage Team (STScI/AURA); Acknowledgment: Bo Reipurth (University of Hawaii)
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