Space

Discovered only a week ago, comet 3I/ATLAS is only the third known visitor from outside the solar system. U of A astronomer Carson Fuls explains what makes the comet special – and why we can only guess where it came from.

The first images from the Vera C. Rubin Observatory mark a proud milestone for the University of Arizona, whose Richard F. Caris Mirror Lab is the only facility in the world capable of crafting the telescope's unique mirror.

Built with mirrors manufactured by the University of Arizona, one of the world's largest optical telescopes clears key milestone toward U.S. federal construction support.

The U of A earned its best ranking in the space science category, rising four spots to No. 4 globally and No. 2 among U.S. public universities.

New observations of 30 planet-forming disks – the birthplaces of planets around stars – reveal in greater detail than ever how gas and dust behave over time and shape the evolution of exoplanet systems.

Astronomers have identified massive, dense star factories, unlike any found in the Milky Way, providing a rare glimpse into processes shaping galaxies in the very early universe.

A U of A-led study reveals a surprising way planetary cores formed. The findings could reshape how scientists understand the early evolution of rocky planets like Mars.

NASA has selected Rocket Lab USA Inc. to launch the agency's Aspera mission early next year. Led and managed by the U of A, Aspera will study galaxy evolution through observation of ultraviolet light.

Astronomers have discovered an enormous cloud of gas and dust, containing the fundamental building block of stars and planets. Dubbed Eos, the molecular cloud is one of the largest single structures in the sky.

A mission to probe the mysteries of the faint universe made a major stride toward launch after the completion of the spacecraft "bus" assembly.