Astronomy

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.

Analyzing radiocarbon in tree-ring samples, scientists have created the most detailed record yet of solar activity during the first millennium B.C.E.

A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system, a new study involving U of A researchers finds.

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.

U of A astronomers are learning more about a galaxy that existed when the universe was just 2% of its current age. One unexpected finding: significant amounts of oxygen.

The U.S. Giant Magellan Telescope and the European Extremely Large Telescope, both under construction in Chile, could transform scientists' quest for life beyond Earth.

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.

"Universe of Science" is an interactive exhibit that explores everything from microscopic worlds to monsoon storms to the farthest reaches of deep space.