Stellar Tour

The sky tonight, live: comets, aurora, new stars and close asteroids as the news comes in, and the 2027 solar eclipses from your exact spot, the annular on February 6 and the total on August 2. Point your phone at the night sky for a guided tour of everything up there: 1.7 billion real stars, every planet and major moon, 13,000 deep-sky objects, and a course in astronomy from the sky over your head to the edge of the universe.

Created by astrophysicist Dr. Aaron Day. Instead of the standard flood of random facts, Stellar Tour tells the scientifically accurate story of each world: what it is like on the ground, in the seas, or floating through the clouds.

THE SKY, LIVE
• Comets, aurora, novae, supernovae, close asteroids, and new worlds, each with when and where to look. Tap one and the sky turns to it.

THE NIGHT SKY, FOR REAL
• The camera view is free: hold up your phone and the names sit on the real sky.
• 1.7 billion stars from ESA's Gaia survey, each in its true position. Pinch from your backyard to the galactic core.
• A sky that looks like the time it is, and the Milky Way as it actually looks.
• Night Vision keeps your eyes dark-adapted with a pure red display.

MOON, STARS, SMALL WORLDS
• The Moon's own page: tonight's phase, the month ahead, the next eclipse, and the places to find along its shadow line.
• Double stars in close-up, and variable stars and how they change.
• The asteroid belt and the Kuiper belt moving on real orbits.

LEARN THE SKY
• Sixteen short lessons. Every stop is live: it flies you to the star, steps the clock, or opens the tool. The first three are free.
• Three books, How We Know, The Sky, and The Whole Story, with a glossary and dozens of diagrams.
• Seven skies: the star figures and folk names of Japan, China, Korea, Vietnam, India, and the Arabian desert, drawn on your sky.

PLAN YOUR NIGHT
• Sky Calendar: every eclipse, meteor shower, conjunction, and full moon. The week ahead is free; the full year comes with Sky Tools.
• Night Planner: the best targets for your sky tonight, hour by hour, and the cloud cover over your spot.
• Reminders only when something is worth stepping outside for. ISS and Tiangong passes come with Sky Tools.
• Widgets, Live Activities, and Control Center buttons. Ask Siri when the next eclipse is, or whether the space station passes tonight.

THE OBSERVING KIT
• My instruments: your telescopes, binoculars, and eyepieces, each a true-field circle on the sky.
• Plan a night from suggestions and your own list, then tick off what you saw.
• A log of your nights with notes and photos, and a card to share.

ECLIPSE EXPLORER
Any solar or lunar eclipse from any place on Earth: local timings, the nearest town in the path, and a live countdown. Your own next solar eclipse is free: its times, what you will see, and a reminder.

GO DEEPER
• Telescope Catalog: 13,000 NGC, IC, and Messier objects.
• Exoplanets: nearly every known world.
• The Cosmos: galaxies, the high-energy sky, the microwave background, and the cosmic web. Fly to a black hole and watch the starlight bend into rings.
• Planets and moons in NASA probe imagery; Hubble and Webb pictures on the objects' own pages.

FOR EVERYONE
• Kid Mode rewrites the whole tour for explorers aged five to seven.
• Birthday Sky: a shareable card of the sky on the night you were born.
• Your lessons, lists, and people follow you on iCloud.
• Fifteen languages, VoiceOver, and Dynamic Type.

BUY ONCE, NO SUBSCRIPTION
The sky tonight and the first lessons are free. Three packs add the rest, each yours forever:
• The Universe: the 1.7 billion stars, the deep sky, and black holes up close.
• Sky Tools: the catalog, the planner, the eclipses, and the Observing Kit.
• The Course: every lesson, The Whole Story, and Kid Mode.
Or Everything, all three. Family Sharing included.
Everything holds every pack to come, too. Own one pack? Complete the set adds the other two.

Take the Stellar Tour!