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

That’s the day an asteroid dubbed 2024 YR4 may strike our planet. Cosmic bookmakers don’t make an impact terribly likely.

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.

Where is all the water that may form oceans on distant planets and moons? The SPHEREx astrophysics mission will search the ...

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 ...

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

"For the first time, we could trace the boundary between the gas residing in galaxies and the material contained within the ...

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

The agency announced on Monday afternoon (Feb. 10) that it has picked SpaceX to launch Pandora, a 716-pound (325-kilogram) ...