Cosmik is a free, no-login web app that tracks the ISS, Starlink and over 20,000 satellites live in 3D, shows the real-time rocket launch schedule, and sends alerts so you know exactly when to look up. It runs entirely in your browser.

Yes. Cosmik is completely free with no login required. Optional push and email alerts are also free; the project is supported by donations.

How do I track the ISS with Cosmik?

Open Cosmik, search for the ISS (or any satellite), and follow it. Cosmik computes the next visible pass over your location and can send a push or email alert a few minutes before it flies over so you can step outside and watch.

Does Cosmik track rocket launches?

Yes. Cosmik shows the live upcoming launch schedule with countdowns, status, and embedded webcasts, and can alert you before liftoff for launches you follow.

How accurate is Cosmik's satellite tracking?

Cosmik propagates official CelesTrak orbital data (TLEs) with the SGP4 model in your browser — the same physics professional trackers use — for accurate real-time positions and pass predictions.

Falcon 9 Block 5 | Starlink Group 17-21 — launch recap (11 April 2026)

Veröffentlicht 10. Juli 2026 · Aktualisiert 11. Juli 2026

Falcon 9 Block 5SpaceX✓ recap Falcon 9 Block 5 | Starlink Group 17-21 — launch recap (11 April 2026)

Der Start im Überblick

Rocket	Falcon 9 Block 5
Operator	SpaceX
Pad	Space Launch Complex 4E, Vandenberg SFB, CA, USA
T-0 (UTC)	11. April 2026 um 05:04
Status	Success

SpaceX launched Starlink Group 17-21 on a Falcon 9 Block 5 rocket on 11 April 2026 at 05:04 UTC from Space Launch Complex 4E.

Launch details

Rocket: Falcon 9 Block 5
Mission: Starlink Group 17-21
Operator: SpaceX
Launch pad: Space Launch Complex 4E, Vandenberg SFB, CA, USA
Launch time: 11 April 2026 at 05:04 UTC
Status: Success

See every upcoming mission on the rocket launch schedule or track thousands of satellites live on the 3D map.

Verfolge diese Mission live in 3D und erhalte kostenlos eine Benachrichtigung vor dem Start.

Live-Karte öffnen →

Quellen

Launch Library 2 · The Space Devs

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