Students in Greece will revive Eratosthenes' calculation of the Earth’s radius and circumference, a remarkable experiment in science.

On March 13, 1781, Sir William Herschel discovered Uranus, the seventh planet from the sun. [‘On This Day in Space’ Video Series on Space.com] Before Herschel discovered Uranus, other astronomers had ...

Lost notes reveal Galileo closely studied the ancient Greek astronomer Ptolemy, offering fresh insight into his early scientific thinking.

So, it came as a shock to many people when, in 1781, it was announced that a seventh planet, the first to be discovered since ...

The mathematical calculation is honored every March 14.

Handwriting analysis determined that the famed astronomer made notes in this copy of the ancient Greek text in the 1590s, decades before his own observations via telescope revolutionized our ...

Researchers at California's SLAC National Accelerator Laboratory are working to uncover what is believed to be the earliest known celestial chart ever created. The ancient star catalogue, attributed ...

The batteries last more than 12,000 charge cycles, making them a competitive storage method that could one day dethrone lithium-ion alternatives.

A joint archaeological mission by the University of Tübingen and the Egyptian Ministry of Tourism and Antiquities (MoTA) has ...

What is a planetary retrograde? And what connection does it have to astrology? We explain how planets move across the sky.

Binoculars or a small telescope will show you why these swarming stars have given the glowing cloud Praesepe its nickname, Nigel Henbest writes ...

Related: Skywatchers delight: 10 top-tier places to go stargazing around Metro Vancouver This time around, you may hear the ...