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.

Track the ISS live — and catch it from your backyard

The International Space Station orbits Earth about every 90 minutes at ~28,000 km/h, and on a clear night it's one of the brightest things in the sky. Cosmik shows the ISS live in 3D and tells you exactly when it will be visible from where you are — free, no login. Open the live map →

How to see the ISS tonight

Open Cosmik at gocosmik.com — it runs in any browser.
Find the ISS (NORAD 25544) by search or by tapping it in the live view.
Check the next visible pass — Cosmik shows when it rises, for how long, and how high (its maximum elevation).
Follow it and enable alerts to get a heads-up minutes before it flies over, so you can step outside at the right moment.

What makes a pass “visible”?

You can see the ISS when it's sunlit but the sky where you stand is dark — usually within a couple of hours after sunset or before sunrise. Cosmik factors in your location and the station's orbit to surface the passes worth stepping outside for, and rates how high it climbs above the horizon.

Beyond the ISS

The same live tracking and alerts work for Starlink, Hubble and 20,000+ other satellites, and you can follow rocket launches too. Learn more about how Cosmik works.