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Due to the weather, the Museum is closed on Tuesday, January 27. All Tuesday programs and some Wednesday programs have been cancelled. Please check here for a full list, and check back for regular updates.

The Museum will be open on Wednesday, January 28, during regular hours, from 10 am to 5:45 pm.

Regular updates will also be posted to our Facebook page and Twitter account (@AMNH).

Dwarf Galaxies: More Star Power

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Dwarf galaxies are small, weakly glowing cousins of typical galaxies. Astronomers long thought that little star formation took place in dwarf galaxies, but a new analysis of images from the Hubble Space Telescope turns this assumption around.

NGC 4163 Dwarf Starburst Galaxy

The dwarf, starburst galaxy NGC 4163.

Credit: NASAESA, and K. McQuinn (University of Minnesota, Minneapolis)


Scientists have revealed that star formation in dwarf galaxies occurs on a global scale, galacticly, and over a longer time scale. This finding has implications on the evolution of galaxies because it is believed that large galaxies form from the merger of smaller galaxies, so understanding these smaller, dwarf galaxies is essential toward our understanding of the evolution of the universe.

American Museum of Natural History

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