Few subjects excite the arcane world of astronomy more than the status of Pluto. In 2006 the governing body of astronomy, the International Astronomi(...)

Nasa image of the planet Mercury. File photograph: NasaAFP/Getty Images

An Irish scientist has succeeded in his bid to name one of the planet Mercury’s most prominent features as Gaeilge. Dr Paul Byrne, a planetary s(...)

Are we alone?

The dramatic announcement this week of the discovery of a small cluster of seven planets attached to a star just 40 light years away – a near neighbou(...)

An artist’s impression of Kepler-453b and the double star at the centre of its solar system. Photograph: Mark Garlick/www.markgarlick.com

Irish astronomers have helped discover a planet orbiting a rare double star, much like the fictional planet Tatooine in the Star Wars film franchise.(...)

The stars will finally start to wink out like candles on a windowsill. Photograph: Getty Images

The universe may have started with a Big Bang, but fresh evidence shows that it will very definitely go out with a whimper. The universe is slowly dyi(...)

An artist’s impression issued  of the New Horizons spacecraft. Image: Johns Hopkins University/Southwest Research Institute/PA

A few weeks ago, a big group of my friends climbed Carrauntoohil. I wasn’t able to make it, unfortunately, but looked at the photographs of the trek w(...)

Artist’s concept of the New Horizons spacecraft as it approaches Pluto

On July 14th, the Nasa space probe New Horizons will make its closest flyby over the dwarf planet Pluto and begin its first scientific observations(...)

We already know about four tiny moons that orbit Pluto (top of illustration) and its large moon Charon in a chaotic fashion. They follow roughly circular paths but wobble and tumble erratically as they pass close to the two larger bodies. Illustration: Nasa/SETI Institute via the New York Times

An astrodynamical miracle is happening in the sky above. Our ability to launch a space probe from the revolving Earth to reach a moving target bill(...)

A picture of Carolan Crater near the planet Mercury’s north pole, taken by the Messenger satellite while in orbit around the planet. Credit: NASA

A crater on the surface of the planet Mercury has been named in honour of the Irish musician and composer Turlough O’Carolan. The announcement comes l(...)

People have been invited to submit possible names for five impact craters on Mercury - the planet in our solar system that lies closest to the sun

Putting your name up in lights is enough for some but how about putting a name up on the surface of the planet Mercury?People have been invited to sub(...)

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