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Stellarium Labs

@stellariumlabs

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About Stellarium Labs

Stellarium Labs is a platform created by Noctua Software to develop and publish apps and other products related to Stellarium, the leading open source planetarium used by more than 20 million users since year 2000.

Our goal is to upgrade Stellarium, a now venerable 18 years old project, into a state-of-the-art astronomical engine providing an accurate night sky simulation based on potentially gigantic amounts of online imaging and sky objects catalogs. We are also actively working on porting Stellarium on a large range of devices such as mobile phone, web browsers, and IoT devices.

Since 2011, our main product, the award-winning Stellarium Mobile is one of the leading iOS and Android planetarium simulation app.

We also recently released the first release of stellarium-web.org, Stellarium running in the web browser.

https://www.stellarium-labs.com/stellarium-mobile

https://www.stellarium-labs.com/stellarium-mobile-plus

https://www.stellarium-labs.com/stellarium-web

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Latest Video

Observe the Total Lunar Eclipse on March 3, 2026

by Stellarium Labs

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Observe the Total Lunar Eclipse on March 3, 2026

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About RealtimeSubCount.com

RealtimeSubCount.com tracks live YouTube subscriber activity with a faster page shell, local caching, and analytics modules that do not block the main counter from loading. This page is designed to keep the count visible first while the deeper charts and supporting widgets stream in behind it.

FAQ

The page combines cached API data and fast refresh polling to stay responsive while still tracking changes closely. Exact public YouTube counts can lag, but the page updates far more frequently than the default channel view.

The chart appends new subscriber readings every few seconds. That gives you a rolling growth trace instead of a static count snapshot.

Yes. The embed panel on this page includes both the iframe snippet for websites and the direct URL for OBS or other browser-source tools.