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 ...

Whether you’re an avid bird-watcher, an adventurous stargazer, or someone who simply loves the thrill of a live sports event, ...

The top half of the frame shows Jupiter and its four brightest moons through a telephoto lens — similar to what you'd see through binoculars. The bottom half zooms in to show each moon's unique ...

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 ...