* Astronomy

The first stone circle for more than a century has been discovered on Dartmoor.
The set - at least 4,000 years old - is the highest circle in southern England and the second-largest on Dartmoor.
Thirty-four metres in diameter and at 525 metres on the northern part of the moor near Sittaford Tor, the circle would have been "very impressive" and dominated the surrounding landscape, the researchers say.
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