Telescopes are specialist optical instruments that have been around for over 400 years and are useful for many applications including seafaring, military operations and especially stargazing. But not ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Reflecting telescope made in the ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. In 1667, then a young Fellow at ...

1845 In Ireland, William Parsons builds the Leviathan, a reflecting telescope with a mirror that is 6 feet in diameter. He uses it to discover the spiral structure of the nebula M51. 1908 The Hale ...

This Celestron Astromaster 130EQ is seriously discounted for Prime Day, perfect for moongazing or viewing this month's stunning Orionid meteor shower.

The first telescopes, known as refracting telescopes, were built in the early 17th century by Dutch eyeglass makers. They employed a pair of lenses—one convex fitted at the end of the scope, and one ...

Inside the Eisenhower Community Center, up a steep metal ladder and beyond a small latch door, a group of explorers hunkered below the rooftop dome while waiting for their tour to begin. First stop: ...

It's amazing what you can find on the streets of San Francisco. No, the actual city streets, not the '70s cop drama starring Michael Douglas. I recently came across a scavenger's treasure in the ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. The Hubble Space Telescope is offline. An STS-125 crew ...