page_title: Variable nebula
hierarchical_section_title: Variable nebula
caption_attribution_description: English: An image of en:NGC 2261 by the en:Hubble space telescope. Credit: HST/en:NASA/en:JPL. http://www.spacetelescope.org/images/html/opo9935c.html
context_page_description: Variable nebulae are reflection nebulae that change in brightness because of changes in their star.
context_section_description: Variable nebulae are reflection nebulae that change in brightness because of changes in their star.
caption: A Hubble Space Telescope image of NGC 2261, a classic example of a variable nebula.
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