A photograph of a supernova explosion: after the star blows off the lighter material outside it packs down into a neutron star that becomes a pulsar.

People of old were more aware than we are of the night sky and took a keen interest in unusual happenings above them. The configuration of the stars w(...)

Nasa scientists have used Earth’s gravity to slingshot ‘OSIRIS-REx’  to an asteroid called Bennu. Illustration: Nasa

The Voyager 1 and Voyager 2 spacecraft have now left the solar system and will continue their journeys into deep space indefinitely. How did we manage(...)

Science Foundation Ireland director-general Prof Mark Ferguson said the winners of the 2017 SFI awards reflected “the very best outputs and achievements of the Irish research community”.

Ireland is now operating “in the same ballpark” as major science-funding countries around the world, Science Foundation Ireland director-general Prof (...)

Gauss’s work extended the theory of numbers in several directions, and its influence continued into the 20th century

You may never have heard of modular arithmetic, but you use it every day without the slightest difficulty. In this system, numbers wrap around when th(...)

Flooding along the banks of the Shannon River:  Over the past century, global sea level has been rising at about 2mm each year. Photograph: Brenda Fitzsimons

Seventy per cent of the Earth is covered by water and three quarters of the world’s great cities are on the coast. Ever-rising sea levels pose a real (...)

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