Explore Planetary Orbits Across Time
8Planets is a lightweight viewer and simulator for Solar System orbits. See how planets align and drift through time, from past configurations to future paths, on Mac, iPhone, iPad, and Apple Watch.
Why 8Planets
Built for quick glances and deep orbit exploration
From timeline scrubbing to wrist-friendly views, everything is designed to keep the Solar System clear and interactive on every Apple device.
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Planetary Motion
Adjust the timeline to watch planets sweep their orbits and understand relative speeds at a glance.
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Time Travel
Jump backward or forward to preview the Solar System and planet positions on any date you choose.
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Widgets
Keep a live Solar System on your iOS Home Screen or in macOS Notification Center.
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Apple Watch
Use your wrist to browse the Solar System and spin the Digital Crown to move through time.
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Planet Details
Read focused planet overviews and toggle Pluto to include all classic Solar System bodies.
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More Tools
Includes complications, shareable snapshots, URL scheme support, and more power features.