To listen to RTÉ.ie's radio and podcast services, you will need to disable any ad blocking extensions or whitelist this site.
0
00:00
00:00
Notes
40 years after the Giotto mission reached Halley’s Comet, astrophysicist Professor Susan McKenna-Lawlor recalls Ireland’s role in one of the great space missions of the 20th century. Report by Ian Kenneally and Flor MacCarthy.