The one project that I've found (through the Moon Society Slack channel) that I ended up joining, is Lunar Homestead (http://lunarhomestead.com/). They're working on research involving lunar habitation and the like and they're definitely in the realm of "citizen science".
After a while I figured it might be a good idea to ask the community here to get a better idea of what could exist. So...
What citizen science projects are you working on? Are you looking for others to contribute? What tools besides SciStarter would you recommend for me to find other projects?
There's a wiki with lots of information about the project. https://wiki.satnogs.org
If you'd like you can check out the network web service: https://network.satnogs.org
Some of the data collected by the network are visualised in a Grafana instance: https://dashboard.satnogs.org
All data collected from the network are openly available. So we collect and in many cases decode data that are publicly transmitted, like data from scientific and experimental cubesats, weather satellites and radio amateur communications.
The project is run by Libre Space Foundation (https://libre.space), we interested in building open-space technologies and as such we maintain several open-hardware and free software projects on our repositories (https://gitlab.com/librespacefoundation).
These are its live feeds:
https://raspberryshake.net/stationview/#?net=AM&sta=R0835
https://raspberryshake.net/stationview/boom/stationview/#?ne...
For anyone taking a look at the feeds, depending on the time of day they can show tons of noise from the surrounding neighborhood. But the device is pretty awesome, I can generally detect quakes over 6.0 anywhere in the world. The two links below are a 6.2 in Alaska about 45 minutes ago, and the large quake in Peru last year (https://en.wikipedia.org/wiki/2019_Peru_earthquake).
https://photos.app.goo.gl/4D69cjA66Y3jAH7q9
https://photos.app.goo.gl/yPMRtA7EJstZWx4y7
HappyWhale
aloha cabled observatory, orcasound
phjordphyto, icewatch
darksky.org
There are a lot of citizen science projects sponsored by universities. eBird is an example that is very strong