Using Lofar, a new radio telescope, astronomers have produced one of the best images ever made at the lowest frequencies of giant bubbles produced by a super-massive black hole. On left, radio and optical; right, optical only

A convoy of 30 articulated trucks will depart the Netherlands towards the end of summer and head for Birr, Co Offaly. Their cargo? The components nee(...)

All planets will be low on the southeastern horizon and will line up from left to right (or east to west) with Mercury first then Venus, Saturn, Mars and Jupiter

An astronomical rarity is on the way: a chance to see five planets at once with the waning crescent moon an additional treat. These are “naked eye” p(...)

A solar eclipse in Varanasi, India, in July 2009. Ireland is set to experience up to a 95 per cent eclipse on Friday, though it is highly dangerous to look at the sun directly while observing the event. Photograph: Saurabh Das/AP

People have a chance tomorrow to see a rare phenomenon of nature as a near-total eclipse of the sun tracks across Ireland. It will become noticeably(...)

Wren boys in Dublin. Photograph: Frank Miller

People look to the skies at Christmas, some watching for a Yuletide star pointing the way and others for flying reindeer and a jolly character dres(...)