astronomical clocks

Ancient astronomical clock 're-export'
Astrolabes astronomical clock dates from 1590. It was stolen by thieves in 1999 in a series of burglaries at the historic castle Skokloster, north of Stockholm, Nature World News
The season also star
Have you ever wondered why stars are visible only at certain times of the year? For example, why the night sky observers in the Northern Hemisphere can only see the Hunter of the