I don’t know about cool, but there is a buzz – even after 25 plus years in the profession – when you do something that changes someone’s viewpoint on health and safety and they start to do things the right way in order to protect themselves.
There’s loads of cool stuff with astronomy. I’ve been fortunate enough to do some work with RTÉ – both live and recorded. I even got to do a film review on the Moon landings. As well as meeting the RTÉ folks like Dave Fanning and Derek Mooney, it’s great to communicate the message that astronomy is interesting, fun and very accessible to everyone.
The coolest astronomy thing, though, has to be having an asteroid bearing my name. With all my achievements, one very kind colleague put my name forward to the International Astronomical Union and they named asteroid number 21782 after me. So asteroid Davemcdonald will be whizzing around the solar system for a few billion years after I’m well gone. Now that’s cool!