Horizon vs Orbit

Hold up your phone and watch the night sky come alive. Horizon-AR uses your camera, GPS, and device motion to place real-time augmented reality overlays exactly where celestial objects appear in the sky above you. TRACK THE SOLAR SYSTEM Follow the Moon, Sun, Mercury, Venus, Mars, Jupiter, and Saturn with a live arc overlay showing each object's full path across the sky tonight. Rise and set times update in real time based on your precise location. 110 MESSIER DEEP-SKY OBJECTS IN AR Activate Hot Targets mode and see every Messier object currently above your horizon floating in the AR view — galaxies, nebulae, open clusters, and globular clusters, each colour-coded by type. Tap any label to open a detail card showing: • Object type and Messier catalogue number • Common name (Andromeda Galaxy, Orion Nebula, Pleiades…) • Current altitude above the horizon • Apparent visual magnitude • Recommended instrument — naked eye, binoculars, or telescope • Favourite toggle, saved across sessions When objects cluster together, a single tap fans them out radially so you can reach each one individually. FILTER BY OBJECT TYPE Narrow the Hot Targets overlay to just galaxies, just nebulae, or just star clusters with a single tap. Objects you've starred appear in your Nightly Overview for quick access every session. FREEZE THE SKY Long-press anywhere to lock the entire AR view — overlays and camera image — as a still frame. Perfect for star parties, sketching, or sharing a screenshot. Tap once to unfreeze. NIGHTLY OVERVIEW Open the Tonight sheet for a full list of rise, transit, and set times for all solar system objects plus your Messier favourites, sorted for the coming night at your location. WORKS WITHOUT FULL PERMISSIONS No camera access? Horizon-AR switches to a star-field background with altitude rings and an azimuth grid so you can still explore the sky. Declined location? Enter coordinates manually and continue without interruption. No account. No subscription. No ads. Privacy: your location and camera data never leave your device.

Orbit is a solar system explorer built on real NASA data, not just illustrations. EXPLORE Rotate detailed 3D globes of every planet, listen to real recorded sounds from NASA missions, and browse real photos pulled live from NASA's own archive. See today's Astronomy Picture of the Day and the latest real photos from the Mars rovers. GO DEEPER Browse black holes, galaxies, exoplanets, and nebulae — plus a live feed of NASA's most recent Hubble and Webb telescope images, real current space weather, and the latest from NASA's Artemis Moon missions. FIND WHAT'S REALLY ABOVE YOU Point your phone at the sky and Sky Map shows you real stars, planets, and constellations, calculated live from your actual location and the current time — not a static illustration. BUILD YOUR OWN SOLAR SYSTEM Drop in planets and stars, and watch real gravitational physics take over. Smash two suns together and watch a black hole form. PLAY Test what you've learned with a Solar System Quiz, dodge asteroids, and pilot a rocket toward space. Orbit's free tier includes full access to the Explore tab and Mars rover photos. Orbit Premium ($4.99/month) unlocks Deep Space, the Solar System Builder, and all games. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/