Large and small galaxies may grow in ways more similar than expected

Thursday

a picture of NGC 300 is a small galaxy located about 6 million light-years from Earth

Galaxies like the Milky Way grow by merging with smaller galaxies over billions of years, unlike dwarf galaxies, which have long been thought to lack the heft to attract mass and grow in the same way. New observations challenge this view, suggesting that even dwarf galaxies can accrete mass from other small galaxies.

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U of A professor brings Hopi perspective to U.S. Bureau of Land Management

U.S. Secretary of the Interior Deb Haaland has appointed University of Arizona's Michael Kotutwa Johnson to the Bureau of Land Management (BLM) Arizona Resource Advisory Council (RAC). He sees it as an opportunity to foster collaboration.

U of A expert working to preserve Native American sign languages

A book she found in a library when she was 10 inspired Melanie McKay-Cody to pursue a career studying Native American sign languages. Now, as a researcher in the U of A College of Education, she's one of the foremost experts at the intersection of Native and Deaf identity.

'Ghost towns' of the universe: Ultra-faint, rare dwarf galaxies offer clues to the early cosmos

Astronomers have struggled with finding ultra-faint dwarf galaxies far enough from the Milky Way's influence, making these faintest galaxies in the cosmos difficult to study. Three newly discovered dwarf galaxies in an isolated region of space show evidence of star formation being cut short by events in the early universe.