The Grubb coelostat and Einstein lens with PhD student Maria Koutoulak. The coelostat will go on display. File photograph: Mark Stedman

Ireland’s role in major astronomical discoveries of the past century is being recognised with a travelling exhibition that arrives in Dublin this week(...)

During the eclipse, Crommelin operated the telescope loaned by the Royal Irish Academy, and it was his photographs which actually confirmed Einstein’s theory. Photograph:  Justin Sullivan/Getty Images

Most Irish people today are aware that astronomy thrived in Ireland during the 19th century, thanks to the enthusiasm of a number of prominent wealthy(...)

Prof Paul Callanan pictured with the equatorial telescope in the Crawford Observatory, UCC, which was manufactured by Howard Grubb. It tracks the motion of the stars using clockwork - just the same as Grubb’s “coelostat” device, which was used during the eclipse of 1919. Photograph: Andrew Bradley

A total eclipse of the Sun 100 years ago today – on May 29th – provided the first evidence in favour of Einstein’s theory of general relativity. It g(...)