I think these are what you're referring to?

The rocket ship represents a computer programming project, and then the stars icon represents a computer programming challenge. You can find some examples of these in the Intro to JS course.

I hope this helps! Please let me know if there's anything else I can help you with!

Yes! Thank you! Also, we are having issues with a couple of the programming Quiz/test/challenge activities having no title or description other than the stars symbol.  Thanks so much!

Thanks for sharing that! I took a look at the issue and it seems to be a bug.

We believe this happens when you begin working on a programming challenge, navigate away for a few minutes, and then come back to it. So in the above case, the blank challenge is actually a continuation of the previous "Challenge: Exploding Sun" item but is showing as a separate log item.

I've shared this with the team so they can further investigate and work on a fix!

Good to know, thanks!