OptiUniverse vs Planet

Explore the Solar System in 3D on your iPhone. Get close to Saturn's rings, discover Jupiter's cloud bands, inspect Earth, and choose a space mission to replay. OptiUniverse brings planets, moons, and spacecraft journeys together in an interactive universe built for curiosity. Browse celestial destinations, move freely around each world, and learn through detailed visuals and concise science facts. EXPLORE PLANETS AND ORBITS - Discover planets, moons, and distant worlds with detailed 3D materials, atmospheres, and rings. - Pan, pinch, and rotate to find your own perspective, or follow a celestial object. - Inspect object facts and visualize orbital paths and supported transfer routes. - Explore a solar-system simulation synchronized to the current date using offline planetary ephemerides. REPLAY SPACE MISSIONS - Follow Voyager 1 from launch through its Jupiter and Saturn flybys to its journey beyond the heliosphere. - Watch Crew 13 travel from Earth to docking with the International Space Station. - Explore Artemis II's Earth-Moon-Earth journey and Starship Flight 14's launch, deployment, and return. - Choose missions from the home-screen carousel, ordered by launch date. Mission replays are compressed, illustrative visualizations. Spacecraft sizes, trajectories, and timing are adapted for clarity; they are not live spacecraft tracking or telemetry reconstructions. From a quick look at a favorite planet to a journey through spaceflight history, OptiUniverse makes space something you can explore.

Planet turns the solar system into something you can hold, spin, and poke at. Built for curious minds of all ages, it trades walls of text for things you can actually touch: drag through the orbits, tap a world to open it up, and see the real numbers behind it. EXPLORE THE SOLAR SYSTEM Pinch to zoom and drag to pan across the planets in their orbits. Tap any planet — or the Sun — to open its details: diameter, distance from the Sun, day length, and a short description. Then open it as an interactive 3D model you can turn in your hands. BROWSE AND SEARCH Every planet, the Sun, 20 notable moons, and a full overview of the solar system itself — how it formed, what's in it, and where we sit in the Milky Way. Search across all of it: type "Olympus" and you'll land on Mars. MOONS Titan's lakes of liquid methane. Enceladus firing geysers of water into space. Io, the most volcanic world we know. Ganymede, bigger than Mercury. Triton, orbiting backwards because Neptune caught it. COMPARE Put two worlds side by side and watch the scale land. Diameter, distance, day length, year length, gravity, and moons — drawn to their true relative size. Line Earth up against the Sun and see what 109 times wider actually looks like. TEST YOURSELF 135 questions, ten per round, drawn fresh every time. Every answer comes with a one-line explanation of why it's right, so a wrong guess teaches you something. Miss a few and you'll get them back at the end, with the reasons, to review. WEIGH IN, ANYWHERE Enter your weight and see what you'd weigh on every other planet — in kilograms or pounds. Enter your age and find out how many laps of the Sun you'd have made on Mars, or Neptune. SEE THEM IN 3D Load a detailed 3D model of any planet, spin it, and get close. ENGLISH AND PERSIAN Fully translated, including every article and quiz question. Switch language any time in Settings. No accounts. No ads. No data collected. Just the solar system.