Stephan's Quintet

  • Released Tuesday, January 15, 2019

Stephan’s Quintet is the name given to five galaxies that appear to be grouped together from our perspective on Earth. However, closer examination reveals that the well-formed spiral in the foreground is actually much closer to us and is not interacting with the other galaxies, while the galaxies appearing behind it have had their shapes distorted by each other’s gravitational fields.

The larger and more massive a galaxy, the greater the pull it will have on another galaxy. The effects are clearly visible in the warped galaxies of Stephan’s Quintet. Some of the strange forms created by interacting galaxies are short-lived, while some areas of a galaxy may be permanently separated, or small galaxies combined together. The collision of gas and other material in galaxies as a result of these interactions triggers bursts of bright star formation.


Please give credit for this item to:
NASA, ESA, and G. Bacon, J. DePasquale, F. Summers, and Z. Levay (STScI)

Release date

This page was originally published on Tuesday, January 15, 2019.
This page was last updated on Wednesday, November 15, 2023 at 12:41 AM EST.


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