Irish astronomy has a rich history, dating back to ancient times when the Celts observed celestial bodies for agricultural and religious purposes. They built structures like Newgrange, a prehistoric passage tomb aligned with the winter solstice, showcasing their understanding of the sun's movements. In modern times, Ireland has contributed significantly to astronomy through institutions like the Dunsink Observatory, established in 1783. Irish astronomers, such as William Parsons, the 3rd Earl of Rosse, made important discoveries, including the first detailed observations of nebulae. Today, Ireland continues to engage in astronomical research and education, fostering a growing interest in the field.