This is not so much putting 170 atoms in one, but inflating one beyond the size of its 170-atom neighbourhood.
The hard part being to cool the neighbourhood to such an extremely low temperature that the inflated atom doesn't ionize.
I found it a bit more interesting that the author's middle name is Galileo, and that he is participating in a "blogging" residency [0]:
Inkhaven residency: A 30 day residency for you to grow as a writer. For one month, you'll publish a blogpost every day. Or pack your bags.
Since the end of the 30 day residency in November, I and a few other participants have been posting weekly, so I've got a decent back catalogue and there will be more to come!