More Astronomy Stories

This diagram shows the trajectory of interstellar comet 3I/ATLAS as it passes through the solar system. It will make its closest approach to the Sun in October.

NASA spots a new comet flying in from a distant star system

The newly discovered interstellar visitor is just the third of its kind and fascinates astronomers who hope to learn from it about galaxies far, far away.

This image combines 678 separate images taken by NSF-DOE Vera C. Rubin Observatory in just over seven hours of observing time. Combining many images in this way clearly reveals otherwise faint or invisible details, such as the clouds of gas and dust that comprise the Trifid nebula (top right) and the Lagoon nebula, which are several thousand light-years away from Earth.

This observatory's first images are stunning — and just the start

The Vera C. Rubin Observatory has just released some of its first images. Its powerful new telescope will be able to quickly spot previously unseen astronomical objects.

The Rubin Observatory in all its splendor. In winter, the skies can be cloudy and when the sun passes below the clouds, it's a feast of colors!

University of Arizona researchers played crucial role in developing Vera C. Rubin Observatory

The observatory took over two decades to build and get up and running, and made international news as it recently released its first images.

Vera C. Rubin Observatory site in Chile.

Newest mountaintop telescope prepares to release first pictures

Vera C. Rubin observatory will use a University of Arizona-developed camera to capture images.

Illustration of asteroid approaching Earth.

UA researchers get the spotlight in new NASA documentary

The film follows asteroid hunters at telescopes in Arizona and around the world.

Advanced Extremely High Frequency (AEHF) is a constellation of communications satellites operated by the United States Space Force. Image: artist rendering of an AEHF.

New satellite constellation program expected to worsen outer space congestion

Amazon's Project Kuiper plans to place thousands of new communications satellites into low Earth orbit.

Radio telescopes based in New Mexico scan for communication from alien civilizations.

UA Science lecture series returns for its 20th year

The presenters will focus on topics combinng science and communication.

Rogue Theatre's "Marjorie Prime" creates a conversation about what it means to be human in the age of AI.

Also on Arizona Spotlight: Understanding canyons on the moon; and more voices from The Class of 2024.

Planetary Seismometer

Discover how seismometers unveil secrets beneath moons, planets, and asteroids.

A view of the outside of the OSIRIS-REx sample collector. Sample material from asteroid Bennu can be seen on the middle right. Scientists have found evidence of both carbon and water in initial analysis of this material. The bulk of the sample is located inside.

First big results from OSIRIS-REx revealed

The ingredients for life were found on the asteroid.

Field Notes: Meteor Crater

An Exploration of Awe

A team of astronomers sifted through James Webb Space Telescope data to compile one of the largest samples of "little red dots." The team started with the Cosmic Evolution Early Release Science (CEERS) survey before widening their scope to other extragalactic legacy fields, including the JWST Advanced Deep Extragalactic Survey (JADES) and the Next Generation Deep Extragalactic Exploratory Public (NGDEEP) survey.

James Webb Space Telescope's 'little red dots' come into focus

When the cosmic oddballs first showed up in some of JWST's early observations, in December of 2022, it was a surprise.

Spacewatch asteroid trackers use the 90 inch Bok telescope atop Kitt Peak to look for wayward space rocks.

Arizona asteroid hunters detected space rock that fell over Russia

The team used a University of Arizona telescope to track the object to its fiery fate.

Illustration of the Parker Solar Probe flyby of the Sun.

Parker Solar Probe making history six years after launch

Robotic explorer is the first to sail through the sun's atmosphere.

This graphic shows the difference in the appearance of the Moon’s size in its furthest and closest distances to Earth.

Stargazers can see the final supermoon of the year this weekend

If you miss this supermoon, you won't be able to see the next one until October 2025.

James Webb Space Telescope's MIRI imager shows dust cloud around Vega.

Webb telescope delivers new ideas about Milky Way star Vega

UA-built camera shows vast, smooth dust disk surrounding the star.

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