100,000+ space objects available for free!

Uncover the beauty of the night sky with the Sky Tonight app. Effortlessly navigate the stars, planets, constellations, satellites, and more! Discover comets, asteroids, today’s Moon phase, and even get alerts for the next meteor shower or special celestial events. Everything you need for stargazing is right here in Sky Tonight! Works offline

Answer the three big questions every stargazer asks:

★ What's that bright object in the sky?​​
★ What celestial events can I witness tonight?
★ How do I find the object I'm curious about?

Sky Tonight offers an experience tailored just for you. Customize the constellation view, set reminders for unique space events, explore objects’ paths from your vantage point, filter stars and planets by their magnitude, and so much more!

Sky Tonight features:

► Point your device at the sky to see the real-time positions of space objects on the interactive sky map.
► Activate the Time Machine and determine the position of celestial bodies at different time periods.
► Use the augmented reality mode and see the sky map overlaid on the image from your device's camera.
► Get extended information about any sky object by tapping on its name.
► Stay updated on the latest news from the world of astronomy with the What's new section.
► Turn on the night mode to make your sky observation in the nighttime more comfortable.
► Filter the objects that appear on the sky map according to their visual brightness.
► Regulate the brightness of objects on the sky map.
► Spot dozens of asterisms along with the official constellations.
► Adjust the visible constellations and customize their representation on the screen.

Unique features:

◆ Interactive trajectories relative to an observer
Instead of the classic trajectory that shows the object’s trajectory in the celestial sphere relative to the Earth’s center, the app presents the object’s trajectory in the sky relative to an observer. A long touch on the trajectories relative to the observer will move the sky object to the selected point. While holding the touch, move your finger along the trajectory to change the time.

◆ Flexible search
Make use of the flexible search — quickly find objects, easily navigate across different objects and events’ types. Look for "stars", "mars moons", "mars conjunctions", "solar eclipse", and the app will show you all related objects, events, and articles!
There are also Trending and Recent categories in the search section. The first one presents the currently most popular objects, events, or news; the second category contains objects you recently selected.

◆ Fully customizable event reminders
Set event reminders on any time and date not to miss a solar eclipse, a Full Moon, or a star-planet configuration you're interested in.

◆ Astronomy calendar with a stargazing index and weather forecast
Check out the calendar of celestial events that includes lunar phases, meteor showers, eclipses, oppositions, conjunctions, and other exciting events. Learn what astronomy events will occur this month or see what happened in the sky a year ago!
Verify the Stargazing Index calculated from a Moon phase, light pollution, cloudiness, and time when an object is visible. The higher this index is, the better the observation conditions are.

You don’t need several apps for your stargazing planning anymore; Sky Tonight contains all the info you need.

Premium Access:
*The app includes paid Premium Access. Get Premium Access to use Sky Tonight with no limits! Without the subscription, you won't be able to see most of the interface items in different sections, such as Visible Tonight, Calendar, and Search. With Premium Access, you can unlock all interface items in each view and take full advantage of all the app's features. Advertisements are also removed so as not to interrupt your stargazing experience.