Stellarium Mobile

You look up from your phone on a clear night, overwhelmed by the scattered lights above you. You know there are planets, constellations, and satellites up there, but they all look the same. You tap your screen, and the device becomes a window. Stellarium Mobile identifies exactly what you are seeing, overlays the names of stars and planets in real time, and transforms that chaotic sky into a navigable map of the universe. No guessing, no astronomy degree required—just a direct line of sight to the cosmos.

Core Tools and Observation Modes

Stellarium Mobile is a full-featured planetarium that uses your device’s sensors to match the sky in front of you. Point your phone or tablet at any part of the sky, and the app renders an accurate, real-time simulation of exactly what is visible from your location. This is not a static star chart. It is a dynamic 3D model of the night sky, updated continuously based on your GPS coordinates, date, and time.

• Live sky tracking with sensor alignment: The app uses the device’s gyroscope and accelerometer to lock the star field to your physical movement. When you tilt or rotate the phone, the on-screen sky moves in perfect sync with the real sky above you, allowing you to sweep from horizon to zenith and identify objects instantly.
• Deep-sky object database and search engine: Access a catalog containing over 600,000 stars, 80,000 deep-sky objects (including nebulas, galaxies, and star clusters), and all major planets in the solar system. The integrated search tool lets you type the name of any known object—like “Andromeda Galaxy” or “Mars”—and the app will automatically point you toward its current position in the sky.
• Time manipulation and simulation controls: You can accelerate or reverse time to see how the sky will look at any future or past moment. This mode is useful for planning observation sessions: set the clock to 2:00 AM tomorrow to check if a specific comet will be above your horizon, or rewind to last week to confirm the position of a lunar eclipse.

Key Advantages for Observation and Learning

The interface is designed for both quick glances and deep exploration. When you tap any object, a detailed information panel appears immediately, displaying distance, magnitude, constellation, rise/set times, and a textual description of the object’s history or scientific significance. The app also features a night mode that shifts the entire color palette to red, preserving your dark adaptation while you observe through binoculars or a telescope.

• High-resolution sky rendering at multiple zoom levels: The graphics engine draws stars with accurate brightness and color, and zooms to a level where you can see the rings of Saturn or the moons of Jupiter as distinct points. No pixelation or blurring occurs at maximum zoom.
• Offline star chart functionality: After an initial download of the base data set, you can use the core star map and object identification features without an active internet connection. This is critical for field use in remote areas with limited cellular coverage.
• Customizable observation profiles: The app lets you set your own light pollution level (from pristine dark sky to urban city center) and adjust the atmosphere model. This changes which stars are visible in the simulation, giving you a realistic preview of what your naked eye will actually see from your specific backyard or campsite.

Download Mobile App Now

Exclusive access for first users: Unlock the full celestial catalog and advanced time-lapse features at a limited introductory price. Point your phone at the sky tonight and see what you have been missing. The universe is waiting—tap install.

Technical Disclaimer

This app requires an active internet connection for initial data download and for downloading high-resolution texture packs or extended object catalogs. GPS location services must be enabled for accurate sky alignment. Continued use of GPS in the background can significantly decrease battery life. The app contains optional in-app purchases for premium features, including a wider deep-sky object database and ad-free observation mode. It is rated for all ages, but parental guidance is recommended for younger children exploring celestial navigation features. Data usage may occur when downloading additional sky textures or satellite tracking data.