Astronomers have long been puzzled by spiral arms seen around some infant stars. UArizona researchers have discovered a young exoplanet that could explain this phenomenon and provide clues about planetary formation.

UArizona has signed a Space Act Agreement with NASA's Johnson Space Center that will allow the university to engage extensively in human spaceflight missions.

Using NASA's James Webb Space Telescope, astronomers have discovered a threadlike arrangement of 10 galaxies that existed just 830 million years after the Big Bang. The structure reveals clues and questions about the fundamental architecture of the universe.

The discovery of tiny salt grains in a sample from an asteroid provides strong evidence that liquid water may be more common in the solar system's largest asteroid population than previously thought.

NASA's James Webb Space Telescope has uncovered an unexpected bounty of full-fledged galaxies at a time when the universe was just getting started. Researchers learned that these galaxies went through bursts of star formation.

Regents Professors Marcia and George Rieke and UArizona alumna Jane Rigby were recognized for their accomplishments in astronomy and key contributions to the James Webb Space Telescope.

Scientists at the UArizona Lunar and Planetary Laboratory have created an online portal that allows members of the public to help discover asteroids hurtling through our solar system.

A new Webb Space Telescope image of the bright, nearby star Fomalhaut reveals its planetary system with details never seen before, including nested concentric rings of dust. These belts most likely are carved by the gravitational forces produced by embedded, unseen planets.

A four-person crew sealed themselves in an air-tight pressurized habitat, called the Space Analog for the Moon and Mars, for six days to practice what it might be like to live on the surface of another celestial body.

On April 23, 1923, the university celebrated a new, 36-inch telescope that would kick off major astronomical research. Steward Observatory will be rededicated this weekend in honor of its 100-year anniversary.