Galaxy Zoo

Help to classify galaxies

Classify Galaxy Zoo subjects. Official approved by the Zooniverse project.

Asks you questions about a picture of a galaxy, with each question depending on the previous question. This "Citizen Science" helps astronomers to analyze the huge amount of images of galaxies provided, for instance, by the Hubble Space Telescope.

Packages

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.64 (64) - Added on 2016-09-01

    This version requires Android 3.0 or newer.

    It is built and signed by the original developer.

    Download APK 3.9 MiB PGP Signature

    Permissions

    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.READ_EXTERNAL_STORAGE
    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.GET_ACCOUNTS (?)
    • android.permission.USE_CREDENTIALS (?)
    • android.permission.MANAGE_ACCOUNTS (?)
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.AUTHENTICATE_ACCOUNTS (?)
  • Version 1.61 (61) - Added on 2016-08-25

    This version requires Android 3.0 or newer.

    It is built and signed by the original developer.

    Download APK 4.4 MiB PGP Signature

    Permissions

    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.READ_EXTERNAL_STORAGE
    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.GET_ACCOUNTS (?)
    • android.permission.USE_CREDENTIALS (?)
    • android.permission.MANAGE_ACCOUNTS (?)
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.AUTHENTICATE_ACCOUNTS (?)
  • Version 1.59 (59) - Added on 2016-08-24

    This version requires Android 3.0 or newer.

    It is built and signed by the original developer.

    Download APK 3.9 MiB PGP Signature

    Permissions

    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.READ_EXTERNAL_STORAGE
    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.GET_ACCOUNTS (?)
    • android.permission.USE_CREDENTIALS (?)
    • android.permission.MANAGE_ACCOUNTS (?)
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.AUTHENTICATE_ACCOUNTS (?)