USGS

Source: Chris Carroll

Arizona residents heard a boom and saw a flash of light in the sky early in the morning, prompting speculation that a meteor was the source.

Media reports say the boom and flash were noticed shortly before 4 a.m. There were no immediate reports of damage.

The Arizona Geological Survey's seismic network didn't pick up any impacts.

Michael Conway of the survey says that could mean the meteor broke up in the sky and that the impacts of any remnants were too small to be recorded.

NASA/JPL-Caltech

A Flagstaff scientist has a new idea about how mountains form on Io, the volcanic moon of Jupiter. 


Dave Heramimtschuk-USGS/Freshwater Illustrated

Several species of aquatic insects are mysteriously missing from the Colorado River in the Grand Canyon. Scientists now know that’s because dam managers rapidly change the river’s level to meet electricity demand.


John Vogel/USGS

Scientists in northern Arizona have something new in their field kits: custom-made drones. Up until now, researchers strapped their scientific equipment to old military discards or simple hobby drones. Now they can order drones tailored for science.


US Department of Interior

An interactive website launched by the federal government explores 16 years of drought in the Colorado River Basin.

Pages