The multiple meanings of many of the words in this sentence make it really poor at communicating what the site is about. "Endeavour" (with a capital 'E') is a proper name I associate with a space shuttle, and 'stellar' can mean 'having to do with stars'. So a first read for me leads to the conclusion that this site has something to do with space flight. And 'system' could mean almost anything. Maybe this site will let me personalize my own star system? All I can take away is that I'm not sure what this is, but clearly I'm not the target audience. Which I'm fine with.....

Rephrasing, Endeavour is something that is started with a terminal system based on Arch.

I know that's a cheesy way to say it's an Arch distro but I hope you notice how poor the phrasing is for someone trying to understand what they've been linked to.