Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

A stunning Valentine's view of a nebula contains hidden depths of starbirth and the violent deaths of massive stars.

An asteroid could potentially crash into Earth in less than eight years. Here's everything to know about asteroid 2024 YR4.

Astronomers have used a continent-sized radio telescope to find the largest black hole jet ever observed in the early ...

Homolovi State Park was ranked among top road trip destinations in Arizona, and for good reason. Here's why you should make ...

The Vatican's Arizona location dates back to 1980, when the Vatican partnered with the University of Arizona to study the ...

A telescope under the sea has spotted the most energetic ghost particle yet - Scientists think it came from outside the Milky ...

NASA's Nancy Grace Roman Space Telescope team has successfully integrated the mission's deployable aperture cover—a ...

As night falls on the Atacama desert in northern Chile four giant telescopes turn their gaze towards the star-strewn heavens.

De Gregorio, the ESO's representative in Chile, warns that the country's unique "window onto the universe" could close, ...

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When we visited Yerkes Observatory in 2021, it was closed and faced a daunting road back, yet its director had big plans. It ...