MetaWorldOS Universe: Interactive 3D Universe in Your Browser

Explore a real-time 3D universe in your browser: an Exoplanet Atlas (12 famous star systems — TRAPPIST-1, Proxima Centauri, Kepler-186, Kepler-452, 51 Pegasi, K2-18, Tau Ceti, Kepler-90, Kepler-62, Gliese 667 C, TOI-700, Wolf 1061 — each with a Three.js mini-scene of star, orbits, and habitable zone), Cosmic Zoom (Powers-of-Ten ride from ~10 AU to ~46 billion light-years through five layered visualizations: solar system, stellar neighborhood, Milky Way disk, Local Group, cosmic web), a geolocated Tonight's Sky panel (ISS, Tiangong and Hubble pass predictions; moon phase; best dark-sky spotting window; meteor showers and eclipses), a Mission Feeds dashboard (NASA CNEOS near-Earth asteroids, NOAA SWPC solar weather with Kp index and X-class flares, Voyager 1/2 distance and light-time, Parker Solar Probe perihelion, JWST observation cycle, Curiosity and Perseverance rover raw images); accurate orbits of Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto, precise lunar phases, live positions of the International Space Station (ISS) and the Hubble Space Telescope, the entire SpaceX Starlink constellation (6,000+ satellites) propagated client-side via SGP4 from Celestrak TLE and rendered smoothly as a single InstancedMesh, a SpaceX Live monitor with Falcon 9 / Falcon Heavy / Starship launch countdowns, latest mission outcome, and lifetime success-rate / landing / reflight stats, and the major moons of Jupiter, Saturn, Uranus, and Neptune. No download, no signup, free to use.

Bodies and features covered on this page

• The Sun — central star of the solar system
• Mercury, Venus, Earth, and Mars — inner terrestrial planets
• The Moon — accurate phase shading and a Moon Landing story tour
• Jupiter — with Io, Europa, Ganymede, and Callisto
• Saturn — with Titan, Mimas, Enceladus, Tethys, Dione, and Rhea
• Uranus — with Miranda, Ariel, Umbriel, Titania, and Oberon
• Neptune — with Triton, Proteus, and Nereid
• Pluto — Kuiper Belt dwarf planet
• Halley's Comet and Comet Encke — with a comet-tracking cinematic
• International Space Station (ISS) — live 400 km orbital tracking
• Hubble Space Telescope — live position in low Earth orbit
• Exoplanet Atlas — 12 famous star systems (TRAPPIST-1, Proxima Centauri, Kepler-186, Kepler-452, 51 Pegasi, K2-18, Tau Ceti, Kepler-90, Kepler-62, Gliese 667 C, TOI-700, Wolf 1061) with star, orbits, habitable zones, and click-to-inspect planet stats
• Cosmic Zoom — Powers-of-Ten ride from the solar system to the cosmic web through five layered visualizations (solar system, stellar neighborhood, Milky Way disk, Local Group, cosmic web)
• Cinematic Recorder — one-tap 9:16 vertical clip export with burned-in subtitle and watermark; native share to TikTok, Instagram Reels, Xiaohongshu, and WeChat
• Tonight's Sky — geolocated ISS / Tiangong / Hubble pass predictions, moon phase, dark-sky spotting window, meteor showers and eclipses
• Mission Feeds dashboard — NASA CNEOS near-Earth asteroids, NOAA SWPC solar weather (Kp, X/M flares), Voyager 1/2 distance and light-time, Parker Solar Probe perihelion, JWST observation cycle, Curiosity and Perseverance rover sol counter and latest raw images
• SpaceX Starlink constellation — 6,000+ active satellites visualized live from Celestrak TLE, propagated client-side via SGP4
• SpaceX Live monitor — Falcon 9 / Falcon Heavy / Starship launch countdown, latest mission, last-10 success rate, total launches, landings, and booster reflights
• Tiangong, BeiDou-3, GLONASS-K1, Landsat 9, NOAA-20, Meteor-M N2-3 and more
• Cosmic Stories — narrated cinematic camera tours
• Virtual Classroom — AI-guided astronomy lessons
• WebXR VR/AR mode — Quest, Vision Pro, and compatible headsets

Frequently asked questions

What does the Exoplanet Atlas show?

A curated visualizer of 12 famous star systems — TRAPPIST-1, Proxima Centauri, Kepler-186, Kepler-452, 51 Pegasi, K2-18, Tau Ceti, and more — each rendered in a Three.js mini-scene with the host star (sized and colored by spectral type), orbits, the conservative habitable zone, and click-to-inspect planet stats (semi-major axis, period, radius, mass, equilibrium temperature, classification). Data sourced from the NASA Exoplanet Archive.

How does the Cinematic Recorder work?

Click Record Clip, type a subtitle, pick a duration (6/15/30s), and after a 3-2-1 countdown the live scene is captured as a 1080×1920 vertical clip with subtitle and watermark burned in. On mobile it hands off via the Web Share API to TikTok / Reels / Xiaohongshu / WeChat; on desktop it falls back to a download. Move the camera freely while recording — everything you see is captured.

What is the Cosmic Zoom mode?

A Powers-of-Ten ride through five layered visualizations (solar system, stellar neighborhood, Milky Way disk, Local Group, cosmic web) that fade in and out as you scrub a logarithmic slider from ~10 AU to ~46 billion light-years. Hit Play to auto-animate the slider and watch the universe expand from a few astronomical units to the observable horizon.

How does the Tonight's Sky panel work?

The panel uses your browser geolocation to compute when the ISS, Tiangong, and Hubble are visible from your location over the next 5 nights — rise/peak/set times, compass bearings, peak elevation, brightness — plus moon phase, sunrise/sunset, the astronomical-dark spotting window, and a curated list of upcoming meteor showers and eclipses filtered to your region.

What is in the Mission Feeds dashboard?

Four live data streams: NASA CNEOS near-Earth asteroid close approaches in the next 60 days; NOAA SWPC solar weather (Kp index, geomagnetic storm level, sunspot number, X/M-class flares); deep-space probes (Voyager 1/2 distance and light-time, Parker perihelion, JWST cycle); Curiosity and Perseverance Mars rovers with sol counter and latest raw images.

How does the SpaceX Live monitor work?

The panel pulls upcoming and recent SpaceX missions from Launch Library 2 (filtered to lsp__name=SpaceX) and lifetime stats from the SpaceX-API. It shows a 1-second-tick countdown to the next Falcon 9 / Falcon Heavy / Starship launch, the latest mission with a success/failure pill, an upcoming list, a recent past list, and a stats strip (total launches, landings, reflights, last-10 success rate). It auto-refreshes every 5 minutes while open.

How does the Starlink visualization work?

When you turn on the Starlink layer, the page bulk-fetches the active Starlink TLE from Celestrak in a single request, propagates each satellite client-side via SGP4, and renders all 6,000+ as a single InstancedMesh. TLE is cached 12h via stale-while-revalidate, and SGP4 runs in frame batches so the constellation stays smooth at 60fps.

Is the planetary motion astronomically accurate?

Yes. Orbits use the J2000.0 epoch with Kepler propagation, the Moon uses an ELP-2000/82 simplified model with phase shading from real Sun direction, and satellite positions update every frame from live Celestrak TLE via SGP4.

Do I need a VR headset?

No. The default experience runs in any modern browser. WebXR VR/AR is optional, supported on Quest, Vision Pro, and other compatible headsets.

Is it free?

Yes — the entire 3D Universe, all cosmic stories, the virtual classroom, AI explanations, the live Starlink constellation, the SpaceX Live monitor, Tonight's Sky, and the Mission Feeds dashboard are free with no signup required.