[For example, 12x60 binoculars produce 5mm exit pupils; 8x60 binoculars give you 7.5 mm of exit pupil.] The key is: Exit pupils should roughly match your eyes' pupils. And eyes change with age.

All eyes are on Comet 3I/ATLAS as astronomers worldwide chase the exotic ice ball through our solar system ...

These Celestron SkyMaster 25x100 binoculars are in Amazon's Black Friday sale, priced at $389.01.. Celestron is a leader in the field of optical technology and the company regularly features in ...

July's full moon, often called the "Buck Moon," will occur on July 10, 2025.

July's full moon, often called the "Buck Moon," will occur on July 10, 2025. As of July 2, AccuWeather predicts it will be ...

Exploding stars V462 Lupi and V572 Velorum are best seen from the Southern Hemisphere. One has been spotted from the United States.

The Oort cloud is mind-blowingly far away. The distance from the sun to Earth is roughly 150 million kilometres, and that measurement is called one astronomical unit (AU).

June 2025 is packed with dazzling astronomical events, including meteor showers, full moons, and rare planet sightings. Don't miss these 9 skywatching highlights this month! The post Astronomical ...

What space events are going to happen in 2025? Here's an astronomical calendar of every full moon, supermoon, meteor shower, eclipse and comet coming.