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 is 400 times farther than that, at nearly 100 million miles (but ...

The lunar terminator, the sunset/sunrise line that sweeps across the Moon’s surface as the Moon orbits Earth, travels at a rate of 9.6 mph (15.4 km/h) along our satellite’s equator. Taking the average ...

Binoculars are clearly the greatest invention ever bestowed upon the naturalists of the world. Before binoculars, our knowledge of many birds was vague to nonexistent. Now anyone can pluck distant ...

The second I picked up the CNVPros, I immediately thought to myself, "Are they heavy? Yeah? That means they're expensive, put ...

Whether you’re an avid bird-watcher, an adventurous stargazer, or someone who simply loves the thrill of a live sports event, the right binoculars can elevate your experience. But with so many options ...

Rugged, powerful and designed for the ultimate adventure, these image-stabilized binoculars can keep up with you and then some.

Spring means it’s time to look up into our night sky and find one of the oldest objects in our galaxy: the M3 Cluster. NASA and other sky experts call this group of ancient stars “a truly distant ...

The practice of using a device to project an image of the Sun is thousands of years old. But if using a pinhole doesn’t give the image quality you want, then try this project. The final image will ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...