An 18th-century Neoclassical clock standing ten feet tall, made by a clockmaker to the French king, may fetch as much as $850,000 at a Paris auction on June 30. “It’s a once-in-a-lifetime occasion,” ...

Ileana Chinnici, an astronomer affiliated with the Vatican Observatory, is one of the editors of the new book Astronomical Observatories and Chronometry, 18th-20th Century: Studies in Honour of Paolo ...

This is an astronomical clock made by Song I-yeong, who was an astronomy professor in 1669 during the reign of King Hyeonjong ...

If the workings of a mechanical timepiece give you a thrill, prepare to be blown away by this over-the-top astronomical clock. The horological masterpiece, which was designed by [Mark Frank] as his ...

If you visit the Copenhagen City Hall, you’ll see an ornate mechanical clock. By itself, this is unremarkable, of course. There are plenty of ornate clocks in city halls around the world, but this one ...

Reed Anway · On Dec. 8, 2025, the Purple Mountain Observatory in Nanjing, China published a paper in Astronomy and Astrophysics about the Lunar Time Ephemeris, or simply the LTE400, a software which ...

Physicists are quietly rewriting one of the most basic units in science, using a new generation of optical clocks that can keep time so precisely they barely lose a beat over the age of the universe.

The Gazette offers audio versions of articles using Instaread. Some words may be mispronounced. CEDAR RAPIDS — The clock tower in Cedar Rapids’ Czech Village — which features the only astronomical ...

McKim Observatory still houses many of its original instruments, including a 9.53 inch Clark Refractor telescope, a meridian transit telescope, and a gravity driven chronograph. Missing from the early ...

McKim Observatory is an excellent example of a late 19th-century American observatory. Built in 1884, it retains much of its original equipment and remains largely untouched by modernization. Its ...