Add Yahoo as a preferred source to see more of our stories on Google. Go outside right now. What’s the farthest thing you can see? A tree? A bird? What about the Moon? It’s 250,000 miles away. The Sun ...

That the universe is expanding has been known for almost a hundred years now, but how fast? The exact rate of that expansion ...

That the universe is expanding has been known for almost a hundred years now, but how fast? The exact rate of that expansion remains hotly debated ...

Astronomers at the Large Binocular Telescope on Mount Graham did not discover new exoplanets on the telescope’s first, limited scientific run this past fall, but they were able to gather the clearest ...

A UA-led telescope atop of Mount Graham has captured the first glimpse of an asteroid-bound spacecraft since its launch in September 2016. The Large Binocular Telescope Observatory, an international ...

A shimmering blue dwarf galaxy called Markarian 178 glows just 13 million light-years away, packed with hot young stars and rare stellar heavyweights. Credit: ESA/Hubble & NASA, F. Annibali, S. Hong A ...

Sky This Week is brought to you in part by Celestron. Friday, February 20Once the waxing Moon sets this evening, its ...

A city-sized green comet, C/2024 E1 (Wierzchoś), is approaching Earth and will soon be ejected into interstellar space, ...

No tripods. No heavy telescopes. No setup. A whole new world of mobile long-range imaging begins as Stabi One 10×20 brings digiscoping to your pocket — lightweight, instant, and fully stabilized. The ...

The comet C/2026 A1 (MAPS) belongs to the "Kreutz sungrazer" family—comets that come very close to the Sun's surface. Past sungrazers have been bright enough to be seen during daytime hours. The best ...

A total solar eclipse in April 2024 stunned millions across the United States.

Hatley Pointe, a year-round resort in Madison County, has high-intensity LED lighting that pollutes formerly beautiful night ...