New observations led by a U of A astronomer suggest that even dwarf galaxies can accrete mass from other small galaxies, challenging a long-held theory about dwarf-galaxy expansion.

The exoplanet mission, which will study of at least 20 known planets orbiting distant stars, has cleared an important milestone with the completion of its spacecraft bus.

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.

The exhibition, which opens Jan. 18, features 90 works by leading contemporary artist Hank Willis Thomas, examining themes of social justice, identity and visual culture.

The grant from the National Institute for Occupational Safety and Health will support U of A researchers' work to improve safety and productivity in the mining industry.

High housing costs and ongoing financial instability make it difficult for many living in Tucson to cover basic expenses or manage unexpected emergencies, according to data collected by U of A students.

Taking advantage of a cosmic "double lens," astronomers resolved more than 40 individual stars in a galaxy so far away its light dates back to when the universe was only half its present age.

University of Arizona President Suresh Garimella has selected Dr. Francisco Garcia as chief of staff to the president.

Billions of years ago, two icy worlds collided. Rather than destroying each other in a cosmic catastrophe, they spun together like a celestial snowman, finally separating but remaining forever linked in orbit. This is how Pluto and its largest moon, Charon, originated, a U of A study finds.

University of Arizona President Suresh Garimella announced the appointment of Elliott Cheu as interim Chief Information Officer.