SpaceUtil

Point your phone at the sky to see constellations. 3D solar system, ISS tracker.

SpaceUtil brings the whole sky into one app: an AR star map, a 3D solar system, live ISS tracking and the current position of the Voyager probes. No account, and almost everything is computed on your device without an internet connection.

AR STAR MAP Point your phone at the sky and the stars and constellations in that direction appear on screen. 120,000 stars, all 88 constellations with lines, names and artwork, an AR mode that overlays the camera, and a red night mode. Search for a star, planet or constellation and an arrow guides you to it. Rewind or fast-forward time to see the sky on any date.

3D SOLAR SYSTEM An orrery with the Sun, the eight planets and major moons in their real positions. Rotate and zoom with your fingers, tap a planet for its story. Live distances to each planet, Jupiter's four big moons, Saturn's rings, conjunctions and alignments.

LIVE ISS TRACKER See where the International Space Station is right now on a 3D globe and a world map, updated every second. Visible pass predictions for your location with time, direction and altitude, plus a sky-path view.

WHERE ARE VOYAGER 1 AND 2? Follow the two farthest human-made objects on a 3D map of the solar system with their current distance from Earth. Computed on your device from NASA/JPL reference data.

TONIGHT A briefing on tonight's observing conditions from the moon phase and twilight times, with the top 5 objects to look at now. Sun, moon and planet rise and set times; civil, nautical and astronomical twilight.

MOON, ECLIPSES, METEOR SHOWERS Moon phase calendar and lunar age, upcoming solar and lunar eclipses, every major meteor shower with its peak night and how bright the moon will be.

ASTROPHOTOGRAPHY HELPERS 500-rule exposure calculator, Milky Way planner, golden and blue hour, moonrise direction.

LEARN AND PLAY Constellation myths, a space quiz, the sky on your birthday, light travel time, light-year/AU/parsec converter, an exoplanet catalog, an observation log with badges.

PRIVACY Location is used only on the device to align the sky map, and the AR camera image is never captured, stored or sent anywhere. No account, no cloud.

A single banner ad at the bottom of the screen supports development. No full-screen or video ads.

Data sources: HYG star catalog (CC BY-SA), CelesTrak, NOAA SWPC, NASA/JPL Horizons. SpaceUtil is not affiliated with or endorsed by these organizations.