Catching up on this news from Bluesky:

Hubble is a new open-source project to build and operate a whole-Atmosphere public data mirror, synchronizing every atproto repository in real-time, keeping public data available even when a PDS goes down.

Great project. It’s not like the Internet Archive (no history) but more a current mirror for PDSes that might be increasingly hosted outside of Bluesky, and so without the infrastructure for backups, etc. One of Bluesky’s strengths is data portability and this leans into that.