The first ever photo of a black hole, taken using a global network of telescopes, conducted by the Event Horizon Telescope (EHT) project. Photograph: Event Horizon Telescope (EHT)/National Science Foundation/Reuters

The first close-up picture of a black hole taken deep in space was unveiled on Wednesday. The event was awe-inspiring for the world and immensely si(...)

An artist’s rendering of the merger of two neutron stars.  Image: Robin Dienel/The Carnegie Institution for Science via The New York Times

A collision of two neutron stars, 130 million light years away, has opened up “a new window on the Universe”. The spectacular event which occurred on (...)

CU3

Well, the night is nearly upon us. And at this point – if you’re not in – it’s too late for the Áras an Uachtaráin lottery, or for prebooked tickets f(...)

Anti-Semitism: as Hitler legalised the exclusion of Jews from German life, Irish civil servants warned ministers of policies that would create a “surplus” of Jews in Ireland. Photograph: Bettmann/Getty

On July 17th, 1939, a balding man with an exotic accent moved into 65 Kenilworth Square, in Rathmines in Dublin. The 54-year-old professor of mathema(...)