This series on The Hard Shoulder will try and answer some of the important questions about the galaxy. This week Dr Colman Gallagher, a Planetary Geomorphologist from the UCD School of Geography joined Kieran to discuss dark matter...

Guide to the Galaxy: Dark Matter

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Every Monday Dr Colman Gallagher from UCD answers questions such as ‘What is the Milkyway?’ and ‘Is there life on Mars?’

Guide to the Galaxy: Dark Matter

Science

Astronomy