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.

Atlas V 551 | Amazon Leo (LA-05) — launch recap (4 April 2026)

Publicado 10 de julio de 2026 · Actualizado 11 de julio de 2026

Atlas V 551United Launch Alliance✓ recap Atlas V 551 | Amazon Leo (LA-05) — launch recap (4 April 2026)

El lanzamiento en datos

Rocket	Atlas V 551
Operator	United Launch Alliance
Pad	Space Launch Complex 41, Cape Canaveral SFS, FL, USA
T-0 (UTC)	4 de abril de 2026 a las 05:46
Status	Success

United Launch Alliance launched Amazon Leo (LA-05) on a Atlas V 551 rocket on 4 April 2026 at 05:46 UTC from Space Launch Complex 41.

Launch details

Rocket: Atlas V 551
Mission: Amazon Leo (LA-05)
Operator: United Launch Alliance
Launch pad: Space Launch Complex 41, Cape Canaveral SFS, FL, USA
Launch time: 4 April 2026 at 05:46 UTC
Status: Success

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Fuentes

Launch Library 2 · The Space Devs

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