Hubble
A Public Mirror for the Whole Atmosphere
In development!
Infrastructure for network resilience
Public data in atproto lives on Personal Data Servers (PDS), which can sometimes crash, have networking issues, or be unavailable for other reasons.
Hubble synchronizes an authenticated copy of data repositories in the atmosphere, so you can recover your content even if your PDS loses it. Authenticated Transfer (the AT in AT Protocol) ensures accurate replication on Hubble, and prevents Hubble itself from tampering.
Hubble is a new project from microcosm with support from Bluesky, launching by end of June 2026.