Space

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.

Despite its rich inventory of organic molecules, Saturn's largest moon may be able to support only a minuscule amount of biomass, if life exists there.

NASA's newly launched SPHEREx mission will use software developed at the Arizona Cosmology Lab to analyze data and help astronomers understand what happened in the first trillionth of a second after the Big Bang.

An advanced imaging system developed at the University of Arizona boasts a shape-shifting mirror that delivers observing details typically reserved for space-based telescopes.

Researchers at the University of Arizona have discovered that planet-forming disks of gas and dust around tiny stars live much longer than previously thought. The findings provide new insights into planet formation and the habitability of planets outside our solar system.

Two research publications by the OSIRIS-REx sample analysis team suggest that conditions for the emergence of life were widespread across the early solar system.

Some of the most common types of planets in the Milky Way may be very different than astronomers imagined, according to researchers probing the atmosphere of planet GJ 1214 b.

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.

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.