Stellar Tour: AR stargazing created by an astrophysicist

The sky, live.

The sky tonight, live: comets, aurora, new stars and close asteroids as the news comes in, each with when and where to look. Point your iPhone or iPad 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.

For iPhone and iPad. Free to start.

What the sky is doing tonight.

Comets, aurora, new stars, close asteroids and newly found worlds arrive as the news comes in, drawn on your sky with when and where to look. The 2027 solar eclipses are ready from your exact spot, with a countdown and the nearest town in the path. The Observing Kit, for binoculars and telescopes, plans your night, keeps a log of it, and draws each of your own instruments as a circle on the sky. The Moon has a page of its own, stars have pages too, and the asteroid and Kuiper belts now move on real orbits.

The Eclipse Explorer in the app from Luxor: the annular eclipse of 6 February 2027 and the total eclipse of 2 August 2027, with 6 minutes 23 seconds of darkness at Luxor

Total eclipse, 2 August 2027.

The 2027 solar eclipses from your exact spot, the annular on 6 February and the total on 2 August. Any solar or lunar eclipse from any place on Earth: local timings, the nearest town in the path, and a live countdown.

The Pleiades in the app inside a 10x50 binoculars circle, with Tonight's double stars and variable stars below

Your telescope’s night, planned.

Your telescopes, binoculars and eyepieces, each a true-field circle on the sky. Plan a night from suggestions and your own list, tick off what you saw, and keep a log of your nights with notes and photos.

The Moon's page in the app: the waxing gibbous Moon, 77% lit, its rise and set, the next full Moon and lunar eclipse, and what to look for along the shadow line through binoculars

The Moon, up close.

The Moon's own page: tonight's phase, the month ahead, the next eclipse, and the places to find along its shadow line.

The app now comes as three packs, The Universe, Sky Tools and The Course, or Everything. The camera view is free, anything you already bought stays yours, and if you bought Cosmic Expansion you already own Everything.

Everything up there, explained.

Every picture below is the app itself, on an iPhone.

A lesson in the app, The giants and their moons: the planets drawn to scale, and the lesson's stops, Visit Jupiter first

16 lessons in astronomy.

Sixteen short lessons, from the sky over your head to the edge of the universe. Every stop is live: it flies you to the star, steps the clock, or opens the tool. The first three are free.

Explore in Kid Mode: tonight's Moon, the lessons, the Observing Kit and the Sky Calendar on a starry blue page

Kid Mode, for ages 5–7.

Kid Mode rewrites the whole tour for explorers aged five to seven: the same sky, the same worlds, in words a young reader can follow.

Explore in the app: tonight's moonrise, moonset and hours of darkness, the next sky event, and the lessons, the Observing Kit, the Sky Calendar, the Telescope Catalog and the Eclipse Explorer

Tonight’s sky, at a glance.

Sky Calendar: every eclipse, meteor shower, conjunction, and full moon. 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.

Cygnus X-1 in the app, close in: the black shadow, the orange disc of gas, and the Milky Way bent around the hole

Approach a black hole.

Seven black holes at their real places in your sky. Fly to one and watch the starlight bend into rings around its shadow, while the disc of gas it is feeding on wraps over the top.

The Stars page in the app: the kinds of star from O blue to M red, the giants and the white dwarfs, with Double stars and Variable stars below

Every kind of star.

Stars have pages too: every kind, from the blue giants to the red dwarfs. Double stars in close-up, and variable stars and how they change.

The Pillars of Creation in the Eagle Nebula, from the James Webb Space Telescope, on its page in the app

Hubble & Webb, in your pocket.

Hubble and James Webb Space Telescope pictures, on the pages of the objects they show, with a Telescope Catalog of 13,000 NGC, IC, and Messier objects placed on your sky.

Made for everyone.

From a first look at the Moon to the edge of the observable universe. Teaching with it? There is a page for teachers.

Created by an astrophysicist

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.

Fifteen languages

English, Spanish, French, German, Italian, Portuguese, Russian, Japanese, Korean, Simplified and Traditional Chinese, Arabic, Hindi, Vietnamese, and Icelandic, with every page, picture, and diagram translated. Dates in your own calendar.

Night Vision, Siri, widgets

A pure red display keeps your eyes dark-adapted. Widgets, Live Activities, and Control Center buttons. Ask Siri when the next eclipse is, or whether the space station passes tonight. VoiceOver and Dynamic Type throughout.

Buy once, no subscription

The sky tonight and the first lessons are free. Three packs add the rest, each yours forever: The Universe, Sky Tools and The Course, or Everything, all three. Family Sharing included.