Star Chart

Star Chart transforms your Android device into a personal planetarium, letting you identify stars, planets, and constellations instantly by pointing at the sky. Trusted by over 30 million stargazers worldwide, this app delivers an unmatched celestial viewing experience powered by real-time GPS calculations and a stunning 3D universe.

Discover the night sky with pinpoint accuracy. Point your device at any bright object and Star Chart reveals its identity instantly—whether it's a star, planet, or deep-sky object. The app calculates the current position of every visible celestial body from your exact location, even displaying hidden stars and planets in broad daylight. Curious what the sky looks like from the opposite side of Earth? Simply point your device downward to explore. Want to find your zodiac constellation? Star Chart pinpoints it instantly.

Experience astronomy your way. Choose between hands-free augmented reality mode (point and view) or use intuitive finger gestures to navigate the night sky like an armchair astronomer. Voice commands let you explore the solar system with simple phrases like "Fly me to the Moon" or "Show me Saturn." The powerful Time Shift feature lets you travel up to 10,000 years forward or backward, revealing how the celestial sphere has shifted across centuries. Tap any object to view detailed facts including distance and brightness.

Explore an incredibly detailed universe. The app renders over 120,000 visible stars across both hemispheres, all 88 constellations with authentic 17th-century artwork by astronomer Johannes Hevelius, every planet and moon in the solar system with gorgeous 3D rendering, and the complete Messier catalogue of exotic deep-sky objects. A powerful zoom function reveals the sky in extraordinary detail using simple finger gestures.

Customize your observing experience. Display only the celestial objects you're interested in, manually set your location to see the sky from anywhere on Earth, and even view the sky beneath the horizon to locate the sun at night. A comprehensive search feature helps you find any object instantly. Star Chart works offline for normal usage—no internet connection required for core stargazing features.

Whether you're an amateur astronomer, educator, or simply curious about the cosmos, Star Chart puts the entire universe in your hands. Download Star Chart today and unlock the wonders of the night sky.