#protocluster
Live, measured metrics for the hashtag #protocluster from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #protocluster
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · fosstodon.org (Mastodon public tags API) · fetched 2026-11-02 12:16 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · fosstodon.org (Mastodon public search API) · fetched 2026-11-02 12:16 UTCLive pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-11-02 12:16 UTCEverything below is measured over the latest 13 public posts (spanning ~30896 hours).
Posting hours (UTC) — busiest: 01:00
Languages: English (12) · German (1)
Avg boosts / post: 0.8
Top of the latest posts
Webb Spies Ancient Growing Galaxy Cluster Once Thought Impossible https://petapixel.com/2026/02/02/webb-spies-ancient-growing-galaxy-cluster-once-thought-impossible/ #jameswebbspacetelescope #chandraxrayobservatory #earlyuniverse #protoclus
A lack of Lyman alpha emitters within 5 Mpc of a luminous quasar in an overdensity at z=6.9 - potential evidence of negative quasar feedback at #protocluster scales: https://arxiv.org/abs/2402.06870 -> DECam Confirms that Early-Universe Qua
Discovery of a z ≃ 4.9 Lyα Emitter #Protocluster - Wavelength-dependent Environmental Effects on Galaxy Structure: https://iopscience.iop.org/article/10.3847/2041-8213/ae5824 -> Just 1.2 Billion Years After the Big Bang, Galaxies Were Alrea
What “protocluster” means
WikipediaA galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity, with typical masses ranging from 1014 to 1015 solar masses (M☉). Clusters consist of galaxies, heated gas, and dark matter. They are the biggest known gravitationally bound structures in the universe. They were believed to be the largest known structures in the universe until the 1980s, when superclusters were discovered. Small aggregates
“Galaxy cluster” on Wikipedia (CC BY-SA) →#protocluster across platforms
every network with a public tag surfaceFollow #protocluster straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/protocluster