Astronomy at your Fingertips

The best Astronomy App for Android

Available in English, Deutsch, Français, Italiano & Español

Get it on Google Play
2.5M+
Stars
2,500+
Deep Sky Objects
60,000+
Minor Planets

Screenshots

See Mobile Observatory Pro in action

Core Features

Everything you need for stargazing and astronomical observation

🌅

Accurate Sky Simulation

Realistic sky visualization for any time and location

  • Accurate twilight rendering
  • Moonlit landscapes
  • Blue-hour atmospheric effects
  • Photo-realistic day/night display

Large Astronomical Database

Comprehensive catalogs at your fingertips

  • 2.5+ million stars
  • 2,500+ deep sky objects
  • 60,000+ minor planets
  • 1,000+ comets
  • 5,000+ artificial satellites
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Celestial Events

Never miss an astronomical event

  • Lunar eclipse reports
  • ISS pass predictions
  • Planetary conjunctions
  • Push notifications for ISS passes
  • Daily event reminders

PRO Version Features

Professional-grade astronomy tools for serious observers

Augmented Reality

Point your phone at the sky and identify celestial objects in real-time with our AR sky view.

3D Solar System

Explore our solar system in stunning 3D with accurate planetary positions and orbits.

VR Cardboard Support

Immerse yourself in the night sky with Google Cardboard VR compatibility.

Home Screen Widgets

Moon phase, sun times, and ISS passes right on your home screen with beautiful customizable widgets.

Star Catalogs

45,000 base stars with optional download of 2.5 million stars to magnitude 13.

Deep Sky Objects

Complete Messier (110), Caldwell (110), and Hidden Treasures (109) catalogs with imagery.

Satellite Tracking

Track ISS, Starlink constellation, and 5,000+ other satellites with pass predictions.

Minor Bodies

60,000+ minor planets and 1,000+ comets with daily orbital updates.

Eclipse Information

Detailed solar and lunar eclipse data with visibility maps and timing information.

Twilight Calculations

Precise civil, nautical, and astronomical twilight times for your location.

Celestial Event Alerts

Get notified about ISS passes, meteor showers, eclipses, and planetary conjunctions with customizable alerts.

Live Solar Images

Real-time solar imagery with sunspot data from space observatories.

What Users Say

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!"
Google Play User
December 2025
★★★★★
"A fantastic update. I have always found this app excellent, and now it is even better."
Google Play User
December 2025
★★★★★
"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!"
Google Play User
November 2025
★★★★★
"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!"
Google Play User
November 2025

What's New

Latest updates and improvements

v4.0.9

December 2025

  • AR Sky - Completely reimplemented augmented reality sky view
  • ISS Pass Screen - Dedicated screen for upcoming ISS passes with detailed visibility info
  • Event Notifications - Reactivated alerts for celestial events and ISS passes
v4.0.8

December 2025

  • Redesigned Sun Screen - Modern interface for solar information
  • Enhanced Sky View Popup - Collapsible info panel with auto-mark controls
v4.0.7

November 2025

  • Interstellar Objects - Support for objects like Oumuamua and Borisov
  • Smoother Navigation - Independent drag sensitivity for Sky View and Planisphere
v4.0.6

November 2025

  • Live Sun Screen - Real-time solar activity with hourly NASA SDO images
  • Better Satellite Visibility - More accurate ISS and satellite brightness predictions
v4.0.4

November 2025

  • Time Animation - Sky View now animates time automatically with pause/resume control
  • Asteroids in Sky View - Minor planets now visible and selectable
  • Satellite Icons - Satellites displayed as distinct symbols
  • Quick Navigation - Jump to any object centered in Sky View from its details page
v4.0.3

January 2025

  • Smart Object Info - Tap any object in Sky View to see its details instantly
  • Multilingual Star Names - Star labels in English, German, French, Spanish, Italian
v4.0.0

October 2025 - Major Update

  • Completely redesigned modern user interface
  • Faster, smoother Sky View with improved graphics
  • New home screen widgets
  • Customizable event notifications
  • Tonight's Best - See the best objects to observe tonight with visibility info

Ready to Explore the Night Sky?

Download Mobile Observatory Pro and start your astronomical journey today.

Get it on Google Play