page_title: NGC 3666
hierarchical_section_title: NGC 3666
caption_attribution_description: English: Color rendering is done by by Aladin-software (2000A&amp;AS..143...33B.)
context_page_description: NGC 3666 is a spiral galaxy in the constellation Leo. It was discovered by William Herschel on March 15, 1784.
context_section_description: NGC 3666 is a spiral galaxy in the constellation Leo. It was discovered by William Herschel on March 15, 1784.
caption: Hubble Space Telescope image of NGC 3666
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