Have you ever used a sundial? It's a great way to tell time when no other form of a clock is available. How does it work? The surface of a sundial has markings for each hour of daylight. As the ...

“I thought nothing could be more cool to show that Mars is a real world orbiting the Sun, just like the Earth, than to have a sundial marking the passage of time there,” said Nye.

A carved stone found marking a Bronze Age grave in the Ukraine is the oldest sundial of its kind ever found, a new study reveals. The sundial may have marked the final resting place of a young man ...

FAIRBANKS - Although decidedly low-tech, the sundial at Weeks Field by Noel Wien Library still marks the winter solstice. On solstice, which this year fell at 2:03 p.m. Sunday, the sun rises in ...

At night, the sundial glows, with cut-outs of stars, moon, and planets. Underneath the rock garden lies a time capsule that is to be opened on the city’s 100th birthday in 2051.

The 3,000-year-old sundial would have been adjusted to the changing position of the sun every day, requiring a sophisticated understanding of geometry by the people of the Srubnaya culture.