# [Birthday pictures from Hubble](https://www.nasa.gov/content/goddard/what-did-hubble-see-on-your-birthday)
On September 13 in 1997
Arches Cluster
The Arches cluster is the densest known star cluster in our galaxy and resides 25,000 light-years away. In this rough-and-tumble region, huge clouds of gas collide to form behemoth stars.
On December 13 in 2018
Comet Wirtanen
In this image, the nucleus of comet 46P/Wirtanen is hidden in the center of a fuzzy glow from the comet's coma. The coma is a cloud of gas and dust that the comet has ejected as it is heated by the Sun during its passage through the inner solar system.
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On April 13 in 2011
Galaxy Cluster Abell 2261
The giant elliptical galaxy in the center of this image is the most massive and brightest member of galaxy cluster Abell 2261. More than a million light-years wide, the galaxy is about 10 times bigger than our Milky Way galaxy.