Space

The discovery offers astronomers a rare window into conditions resembling those of our own solar system's earliest days.

In one of the biggest surprises of the OSIRIS-REx mission, its target asteroid, Bennu, turned out to be a jagged, rugged world covered in large boulders.

A new U of A study raise questions about how scientists use the Small Magellanic Cloud, our neighboring galaxy, as a reference point for understanding galaxies across the history of the universe.

A University of Arizona-led research team has measured the dynamics and ever-changing "shell" of hot gas from where the solar wind originates.

Taking advantage of a "natural laboratory" in Iceland, a research team from the University of Arizona studied how microbes colonize fresh lava flows as soon as they cooled.

University of Arizona astronomers discover a galaxy with a dual personality – appearing ordinary in visible light while harboring an extraordinarily massive black hole.

The spacecraft of the U of A-led OSIRIS-APEX mission performed a "slingshot" maneuver around Earth as part of its journey to catch up with its mission target, asteroid Apophis.

A new technique helps artificial intelligence systems recognize when they don't know the answer, addressing "wrong-but-confident" AI outputs across science and society.

New analyses of the largest impact crater on the moon reveal unexpected insights into its tumultuous past. They also suggest that once astronauts return to the moon, they will have access to a veritable gold mine of scientific clues.

Using a cutting-edge optics system developed at the University of Arizona, researchers have gotten a glimpse of what our solar system likely looked like during its infancy.