#lightyears
Live, measured metrics for the hashtag #lightyears from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #lightyears
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.social (Mastodon public tags API) · fetched 2026-09-26 23:21 UTCNo measured public usage for #lightyears in the last 7 days. That is a real result, and a good one to know: this hashtag is wide open right now. We show a dash before we ever show a made-up number. Browse the trending index for tags with live measurements.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-09-26 23:21 UTCNo related tags with measured usage found for #lightyears.
Live pulse
measured · Mastodon tag timeline · fetched 2026-09-26 23:21 UTCNo recent public posts found for #lightyears on Mastodon. Nothing measured, so nothing shown.
What “lightyears” means
Wiktionary · Wikipedialightyears
- nounA unit of length (abbreviation ly; equal to just under 10 trillion kilometres (1016 metres)) equal to the distance light travels in one Julian year; used to measure extremely large distances.
A light-year, alternatively spelled light year, is a unit of length used to express astronomical distances and is equal to exactly 9460730472580.8 km, which is approximately 9.46 trillion kilometres or 5.88 trillion miles. As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year. Despite its inclusion of the word "year", the term is a unit of distance, not a unit of time.
“Light-year” on Wikipedia (CC BY-SA) →#lightyears across platforms
every network with a public tag surfaceFollow #lightyears 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/lightyears