Findings from the Dark Energy Spectroscopic Instrument (DESI) suggest that dark energy could be evolving over time. If ...

Play the USA TODAY Daily Crossword Puzzle ... Just recently, Tucson launched its Astro Trail, a curated multi-destination map of dark sky spots, and Colorado is set to achieve 12 state parks ...

With more sightings of the northern lights across the U.S. than usual in recent years, now is an excellent time to make the trek to a Dark Sky Place. Even if you don't see the rainbow of colors ...

There are several dark sky areas in the United States, the National Park Service ... according to NASA maps, and other areas have light pollution. This matters, proponents say, because more ...