More than 2,000 years ago, Greek artisans built a compact machine of interlocking gears that could track the heavens with a ...

While modern humans tend to think of science in terms of innovations made during the past 100 to 200 years, mankind has always had great scientific thinkers. Over 2,000 years ago, one or more such ...

Researchers in Peru uncovered an ancient structure older than the Chankillo Solar Observatory, reshaping views on early ...

Researchers at the Chankillo Archaeoastronomical Complex in Peru have identified a structure older than a well-known observatory, a finding that reshapes the early timeline of Andean astronomy. The ...

Imagining familiar images in the sky has always been an easy way to track the annual progress of the stars. Around the second century C.E., the Greek astronomer Claudius Ptolemy listed 48 “official” ...