Skyglass: Stargazing & Sky Map

Skyglass shows you the sky above you, live. Hold your phone up and the sky follows it: stars, planets, the Moon, constellations and satellites appear right where they are, with their names.

TAP ANYTHING
Tap a star, planet, galaxy or satellite to find out what it is, how bright it is, and where to look. Search for anything by name and Skyglass turns the sky to show you.

A REAL SKY
• Nearly 350,000 stars, from the brightest to the faintest you can see through binoculars
• The planets, the Moon with its phase, and Saturn's rings
• The Milky Way, and the sky in eight wavelengths, from radio to gamma rays
• 88 constellations, with lines and the classic artwork of Urania's Mirror (1824)
• Galaxies, nebulae and star clusters, with real telescope photos you can zoom into

SATELLITES
Thousands of satellites move across the sky in real time, from the International Space Station to Starlink trains. Zoom in to see them up close, follow their paths, and see when they're lit by the Sun.

TONIGHT
See when it gets dark, what's up tonight and when it's best placed, plus the cloud forecast and how good the night looks for stargazing. Live Events lists Moon phases, meteor showers, close planet pairings and ISS flyovers for the month ahead.

HOW DARK IS YOUR SKY?
Skyglass rates your sky on the Bortle scale, shows how many stars you can expect to see, maps light pollution around you, and finds a darker sky nearby, with directions.

MADE FOR THE NIGHT
• Red night mode keeps your eyes adapted to the dark
• Clean view hides every label for a pure sky
• AR mode shows the stars over your camera
• Time travel shows the sky at any hour, past or future
• Sky Tags let you pin notes and photos to places in the sky

PRIVATE
No account, no ads, no tracking. Your location is used on your phone to show the sky above you; only a rough location (about 2 km) is sent to fetch the weather forecast and your town's name.

Skyglass is free.