I have an energy monitor and Home Assistant --- it's pretty neat, and I can verify that the energy usage is essentially the same on both. Helps to pinpoint electricity drains, as I can tell what breaker is using the juice (the smart plugs are also helpful here).
I went with the Emporia Vue2 which unfortunately requires some tinkering to get it to run local-only, but once I set that up it's been a dream. Too bad they don't offer it out of the box configured for local use...
When I took some astronomy classes in the early 2000s, Jocelyn Bell was absolutely credited. In her own words:
That said, yeah, I think she absolutely should have been awarded the Nobel prize. But while she did not, she has the admiration --- rightly so --- of many a budding astronomer.