Google Sky Map
Handy reference to the heavens, day or night

Make the most of early fall’s cool, clear nights with Google’s Sky Map app, an open-sourced guide to all that glitters above. It’s particularly good for students taking astronomy courses, but it’s also just a handy go-to reference to the stars. The app will overlay constellations and a star grid, and will let you either point the phone up for information on that part of the sky or let you search for particular constellations.

With the recent resurgence of interest in space exploration — thanks largely to the Curiosity Rover — there’s no better moment to take the time to look up at the night sky. And, yes, in case you’re wondering: The app still works in the daytime, or in places with too many lights to see the stars. Free, for Android.

Google Sky Map app for Android (

Hayley Tsukayama