# DART’s asteroid impact

> NASA reported 9.2 million views of its DART impact-footage tweet.

- Owner: NASA
- Kind: Moment
- Sector: Education
- Seed date: 2022-09-26
- Milestone date: 2022-09-27
- Date basis: Documented milestone; not a measured attention peak.
- Spread Score: 0 (Niche, provisional), v1.2
- Mechanics: Real-world spectacle, Platform jump

## Summary

NASA and APL turned impact night into a shared countdown: watch-party handouts, hands-on activities and a photo gallery let local hosts join the broadcast. The campaign team reported nearly 1.1 million concurrent viewers at peak.

## Timeline

- 2022-09-26 — NASA (YouTube) — DART’s live camera feed ended when the spacecraft hit Dimorphos.
- 2022-09-27 — Milestone: NASA (YouTube) — NASA’s collision broadcast became the number-one trending video.
- 2022-09-27 — ABC News Australia (Press) — ABC News followed the impact and post-impact briefing in a live report.

The full timeline, metrics and sources are on the case page, or via the Pro API (https://howitspread.com/developers).

Canonical URL: https://howitspread.com/cases/dart-asteroid-impact

Cite as: How It Spread (2026). “DART’s asteroid impact.” Case HIS-01027. Spread Score v1.2: 0/100. Updated 2026-10-17. https://howitspread.com/id/HIS-01027