Experts

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.

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.

U of A researchers have uncovered new findings about involuntary muscle movements that come with the long-term administration of the Parkinson's drug levodopa.

A new U of A-led study, based on archaeological remains found in Alaska, shows that people and the ancestors of today's dogs began forming close relationships as early as 12,000 years ago – about 2,000 years earlier than previously recorded in the Americas.

Researchers found that guidance from experienced CPAP users helps sleep apnea patients stick to their treatment, improving sleep quality and health outcomes.

Analyzing tree-ring samples for spikes of naturally occurring radioactive carbon isotopes, a team led by U of A scientists has pinpointed the date of a massive solar particle eruption event that has long eluded researchers.

From bed bugs to vampire bats, the world is full of creatures that want to suck your blood. U of A experts explain the feeding mechanisms of commonly encountered blood-sucking animals and insects.

U of A College of Information Science experts explain why the election-related media has become so fraught with false information – and why there are only treatments, not solutions.

Lori Poloni-Staudinger explores how the fashion choices of women in power subtly influence public perception. She is one of the editors of "The Palgrave Handbook of Fashion and Politics."

Every second, more than 3,000 stars are born in the visible universe. Many are surrounded by protoplanetary disks – swirling "pancakes" of hot gas and dust, from which planets form. U of A researchers have obtain detailed insights into the forces that shape protoplanetary disks.