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 ...

It's coming. The sun is about to pull another disappearing act across the nation, turning day into night during April’s total solar eclipse.The entire thing will last up to 4 minutes and 28 seconds on ...

Whenever news of a rare celestial event makes the headlines - be it a passing comet, meteor shower or a parade of planets - it makes one wish for two things: a telescope and a pitch-black garden to ...

Most distant celestial objects, such as galaxies and nebulae, generally do not exhibit perceived color through telescopes due to their low surface brightness, which is insufficient to activate the ...