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 ...

We've tested many image-stabilized binoculars — here's our expert verdict on whether you should bite the bullet and buy a ...

We break down the key differences to help you make an informed choice before the sales hit, so you don't waste money on something you won't use. When you purchase through links on our site, we may ...

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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 ...

The Monarch M7 8x42 binoculars offer sharpness across the entire image circle, only a little color fringing and a locking diopter focusing ring. Plus, the slim, compact roof prism design is ...

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 ...