About Excursion Set 

To an astrophysicist, an “excursion set” is one of the many mathematical tools you can use to make sense of the filamentary cosmic web traced out by the clusters of galaxies in the evolving universe.

However, for me the phrase has always conjured the notion of a “set of excursions”. And since the blog makes forays into science and a scientist’s perspective on the wider world it struck me as a fitting name. 

It is eclectic and low-traffic; rarely more than once a month and often less. I write about developments in cosmology and the often unexpected places science shows up in our lives, from sand castles to public policy, and anything that else catches my eye.

I’ve been writing it for over a decade, long enough to see major internet platforms come and go. Consequently, I am cutting my own path rather than living inside an online ecosystem that belongs to someone else.

That said, the “like, share and subscribe” mantra of internet creators transcends any single site – if you enjoy what you read here, you can sign up to the newsletter and/or follow me on BlueSky or LinkedIn to get notifications for new articles. 

Lastly, pieces here are available for syndication and republication and posts have appeared in

The Spinoff 
Newsroom 
The New Zealand Herald 
Interest.co.nz 

Get in touch with me to ask for permission…