The holiday sky saves one last bit of sparkle for the end of the year. In 2025, the grand finale comes courtesy of the Ursids meteor shower. The Ursids may not be as prolific as other meteor showers, ...

The asteroid Bennu carries a small but very real chance of slamming into Earth in the next few centuries, with one particular ...

Get ready to look up: The Orionid meteor shower is lighting up Arizona skies this week. The Orionids, which occur annually during the fall season, are bits of dust and debris left behind by Halley’s ...

The annual Geminids meteor shower is back, promising bright and bold showers. Every December, the Geminids produce dozens and sometimes more than a hundred meteors per hour at their peak. Unlike many ...

Skywatchers in Arizona get a special treat in July—and the best part is that you can see it with your naked eye. The asteroid 4 Vesta is about the length of Arizona and the second-largest resident of ...

Mysterious driftwood high in Grand Canyon caves hints at the legacy of Arizona’s huge impact crater.

The Quadrantid meteor shower is the first of the new year, but its short peak and winter weather often limit visibility. In 2026, the shower's peak on Jan. 2-3 will be difficult to see due to a bright ...