For now this will act as catch-all for concepts science-related concepts.
If you would like to see a new badge/membership type added just send an email to CR4 Admin and, if you can, include an image that you'd like me to use for the badge. (I can resize them for you. Do not send copyrighted images.)
I have taught physics for 40 years and have studied cosmology since retiring 11 years ago. The sources of dark energy and matter are my topics of interest.
