Tag: astronomy
An ancient Greek device worked like an astronomy calculator.
The Antikythera mechanism used gears to model astronomical cycles more than two thousand years ago.
The Moon Is Slowly Moving Away
Laser measurements show the Moon is receding from Earth by about 3.8 centimeters per year.
The Antikythera Mechanism Was an Ancient Calculator
A corroded Greek device recovered from a shipwreck tracked astronomical cycles with complex gears.
A Day on Venus Is Longer Than Its Year
Venus rotates so slowly that one full spin takes longer than a trip around the Sun.