Should I leave this EC off?

I’ve been stargazing almost every night with clear skies for years (yes, I have equipment), and because of it, I’ve developed a real interest in astronomy. I’m a junior who’s currently applying to summer programs, and I’m wondering if this is an EC I should list on my applications now and later on in fall.

I don’t know, I just wouldn’t want an admissions officer scoffing at something that they may not consider a “real” EC… Maybe I should join a nearby adult astronomy club to legitimize this?

No, no don’t leave it off! This is interesting and different and self-directed and shows your desire to learn/explore!

Definitely put it on your application. If you have dedicated a lot of time to it, it should be counted!