#astronomy
Live, measured metrics for the hashtag #astronomy from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #astronomy
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 · mastodon.online (Mastodon public tags API) · fetched 2026-10-23 21:13 UTC538 uses by 319 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mastodon.online (Mastodon public search API) · fetched 2026-10-23 21:13 UTCLive pulse
measured · mastodon.online (Mastodon tag timeline) · fetched 2026-10-23 21:13 UTCEverything below is measured over the latest 40 public posts (spanning ~11 hours).
Posting hours (UTC) — busiest: 10:00
Languages: English (38) · Czech (1)
Avg boosts / post: 3.7
Top of the latest posts
For day 23 #spacetober_challenge nebula: Caroline Herschel (1750 – 1848) a trail blazing woman in #astronomy. Hers was a real life Cinderella story, where rather than marrying a prince, she made a life & career for herself. Marriage her exp
Stargazing on Boston Common, just to the north of the baseball fields, near the entrance to the underground parking garage Saturday Oct 24, 7-9 PM Saturn! The moon! attn @knizer #boston #astronomy
#PPOD: The graceful spiral arms of Messier 83, also known as the Southern Pinwheel Galaxy, reveal a hidden world of cold gas in this view from Chile's Atacama Large Millimeter/submillimeter Array (ALMA). Located approximately 15 million lig
What “astronomy” means
Wiktionary · Wikipediaastronomy/æˈstɹɑnəˌmi/
- nounThe study of the physical universe beyond the Earth's atmosphere, including the process of mapping locations and properties of the matter and radiation in the universe.
Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry to explain their origin and their overall evolution. Objects of interest include planets, moons, stars, nebulae, galaxies, meteoroids, asteroids, and comets. Relevant phenomena include supernova explosions, gamma ray bursts, quasars, blazars, pulsars, and cosmic microwave background radiation. More generally, astronomy studies everything that origi
“Astronomy” on Wikipedia (CC BY-SA) →#astronomy across platforms
every network with a public tag surfaceFollow #astronomy 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/astronomy