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 ...

WITH THE GREAT ECLIPSE JUST OVER A MONTH AWAY -- ON APRIL 8TH -- YOU MAY BE WONDERING EXACTLY WHAT'LL BE GOING ON IN THE SOLAR SYSTEM TO CREATE SUCH A RARE SPECTACLE. SO THIS WEEK, WE'RE GOING BACK TO ...

The images, captured with the new Daniel K. Inouye Solar Telescope in Hawaii, reveal arcs of hot gas just 10 to 30 miles wide that follow the sun’s magnetic fields. Earlier instruments could only ...

The world's largest telescope captured a deep-space nebula — an interstellar cloud of gas and dust that can produce new stars — in stunning detail, providing the first close-up view to date of the ...

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