The best Astronomy App for Android
Available in English, Deutsch, Français, Italiano & Español
See Mobile Observatory Pro in action
Main Menu
Night Sky View
Twilight Sky
Day/Night on Earth
Solar Eclipses
Tonight in the Sky
Object Types
Sky Events
Daily Events
3D Solar System
Orion Nebula
Live Solar Images
Download Catalogs
Everything you need for stargazing and astronomical observation
Realistic sky visualization for any time and location
Comprehensive catalogs at your fingertips
Never miss an astronomical event
Professional-grade astronomy tools for serious observers
Point your phone at the sky and identify celestial objects in real-time with our AR sky view.
Explore our solar system in stunning 3D with accurate planetary positions and orbits.
Immerse yourself in the night sky with Google Cardboard VR compatibility.
Moon phase, sun times, and ISS passes right on your home screen with beautiful customizable widgets.
45,000 base stars with optional download of 2.5 million stars to magnitude 13.
Complete Messier (110), Caldwell (110), and Hidden Treasures (109) catalogs with imagery.
Track ISS, Starlink constellation, and 5,000+ other satellites with pass predictions.
60,000+ minor planets and 1,000+ comets with daily orbital updates.
Detailed solar and lunar eclipse data with visibility maps and timing information.
Precise civil, nautical, and astronomical twilight times for your location.
Get notified about ISS passes, meteor showers, eclipses, and planetary conjunctions with customizable alerts.
Real-time solar imagery with sunspot data from space observatories.
Trusted by astronomy enthusiasts worldwide
"This app is simply fantastic and keeps getting better. It offers a huge variety of features, making it the most professional app in the Play Store. With every update, it surpasses itself. I highly recommend this app!"
"A fantastic update. I have always found this app excellent, and now it is even better."
"Version 4 is amazing: intelligently programmed, very well organized. I am excited to see what ideas will be implemented next. Thank you for this excellent work!"
"Excellent! The ability to adjust the atmosphere at the observation location to match what you actually experience is great. The live sky search works and provides explanations with photos. The view like a rotatable star chart, sky events, twilight phases worldwide, sunspots, planets and more. Along with Stellarium and SkySafari, this is one of the best astronomy programs!"
Latest updates and improvements
Download Mobile Observatory Pro and start your astronomical journey today.