* Astronomy

Newgrange to be X-rayed to determine source of granite

The base of the 5,000- year-old Neolithic monument at Newgrange, Co Meath, is to be X-rayed by a researcher in a bid to determine the origin of its granite boulders.
Dr Ian G Meighan of the Geological Survey of Northern Ireland, who holds an honorary research position in Trinity College Dublin, is determining whether the boulders come from Newry or Mourne.
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