01
Gemini
THE TWINSCastor and Pollux — one mortal, one divine. Swift Mercury still darts between the twins at dusk.
ORRERY is an AI astronomer that tracks all 88 constellations, profiles all 8 planets and catalogues 412 moons. Go on — light the atlas below. The sky answers.
ORRERY fuses live astrometry with a deep astronomical knowledge base, so every star you point at comes with a story.
Real-time astrometry across all 88 constellations with 0.003° precision, from city balconies to dark-sky sites.
Live profiles for every planet — atmospheres, spin states, storm systems and magnetospheres, refreshed nightly.
412 satellites indexed with orbits, compositions and habitability signals — from Phobos to the newest irregulars.
Transits, occultations and meteor showers predicted months ahead, with alerts tuned to your exact coordinates.
The swift messenger, scorched and cratered. ORRERY tracks its 600 °C day-to-night swings and its lonely, moonless orbit.
Earth's evil twin wrapped in acid cloud. ORRERY models its backwards spin and a surface hot enough to melt lead.
The blue outlier. ORRERY watches its oceans, jet streams, and the one moon that steadies its tilt.
The rusted world, mapped to the dust grain. ORRERY tracks martian weather fronts, global dust storms and the slow doom of its two captured moons.
A failed star's shadow, with a storm older than telescopes. Four Galilean worlds ride its gravity well — two top our habitability shortlist.
Rings of ice 280,000 km wide yet often ten metres thin. ORRERY resolves ring structure nightly and follows Titan's methane cycle in real time.
The sideways ice giant. ORRERY resolves its 97.8° roll and its five major moons, named for spirits and faerie queens.
The far blue world of supersonic winds. Its moon Triton orbits backwards — a captured Kuiper Belt world on a slow spiral inward.
Every planet keeps a house in the sky. Rest your cursor on a card and its stars ignite — lines follow the light, exactly as the tracker sees them.
Castor and Pollux — one mortal, one divine. Swift Mercury still darts between the twins at dusk.
The bull's face is traced by the Hyades; its shoulder carries the Pleiades, the sky's most famous cluster.
The great bear's ladle points to Polaris — every mariner's road home, and Earth's compass since antiquity.
The ram of the golden fleece. Two thousand years ago, spring itself began beneath these stars.
The archer's teapot pours straight into the heart of the Milky Way — and toward the galaxy's hidden core.
Faintest figure of the zodiac — as patient as the slow, ringed planet that keeps its house.
The water-bearer pours the celestial river, and hides the Helix Nebula — the Eye of God.
Two fish tied by a ribbon, fleeing the monster Typhon. The spring equinox now rests in their waters.
Hover a world to bring it into the light. Filter by parent planet — every card is a live ORRERY index entry.
Spirals 1.8 m closer to Mars every year — doomed to one day shatter into a ring.
So small its entire sky-span from Mars' surface would fit behind your thumb.
Once a year it hides the Sun entirely. The only other world humans have ever walked.
The most volcanic world known — lava fountains reach 500 km into space.
Hides a subsurface ocean with twice the water of all Earth's seas combined.
Bigger than Mercury, and the only moon with its own magnetic field.
The most cratered surface in the solar system — a four-billion-year archive.
Methane rain carves river valleys under a thick orange haze. Prebiotic chemistry, live.
Vents salty water geysers straight into space, feeding Saturn's E-ring.
May own a whisper-thin ring of its own — the first ringed moon ever suspected.
A patchwork world with cliff faces twice the height of Everest.
The brightest — and possibly youngest-surfaced — of Uranus' five great moons.
Canyons nine times deeper than the Grand Canyon scar its frozen face.
Orbits backwards and geysers nitrogen at −235 °C. A captured Kuiper Belt world.
One of the darkest moons known, hiding in Neptune's glare until Voyager 2 found it.
So large that Pluto and Charon spin around a point hanging in space between them.
A taste of the ORRERY-2 console. Pick a query and watch the model answer the way it will on your dashboard.
Join the early-access program and get a private dashboard for your exact patch of sky. No telescope required.