Star revealed with seven Earth-sized planets in orbit
Trappist-1 is 40 light years away but scientists believe orbiting planets may support life
Trappist-1 is 40 light years away but scientists believe orbiting planets may support life
Most astronomers are sceptical about the existence of Planet Nine, but mathematical models suggest there is something unseen out there
Landmark discovery of ripples in space and time hypothesised by Einstein a century ago
Project one of 21 investments in advanced scientific research funded by SFI programme
Researchers made find when sifting through four years of data
People gathering to watch the astronomical alignments at Newgrange; star-gazing; the wren boys; decorating homes with holly and ivy: many Irish winter customs go back a long way
Crosswords & puzzles to keep you challenged and entertained
Full general election coverage including analysis and results for all 43 constituencies
How does a post-Brexit world shape the identity and relationship of these islands
Weddings, Births, Deaths and other family notices