Hubble image of Arp 148, also known as Mayall's Object.

The nickname comes from astronomer Nicholas Mayall, who first imaged the object in 1940 and noted it looked like a question mark.

Credit: NASA, ESA, STScI, A. Evans, K. Noll, and J. Westphal
https://hubblesite.org/contents/media/images/2008/16/2309-Image?news=true
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