"Discovery" telescopes - not defined anywhere

There is no description/definition of “Discovery” Telescopes anywhere. They’re tagged as Discovery:

But nowhere is that tag explained.

After much searching, the closest I came to an explanation was when I eventually found a description/definition of “Discovery” Credits…you have to click a tiny “i” symbol in Account → Subscription → Balance:

This is going to be really hard for new users to find, or understand.

Even existing iTelescope users have not seen this “Discovery” terminology before.