Sky Map is an Android planetarium software application.
[2][3] Sky Map was designed and developed by a group of Google engineers in Pittsburgh, Pennsylvania as part of their 20% time.
[4] It's now "donated and open-sourced".
On January 20, 2012, Google announced a student development partnership with Carnegie Mellon University and released Sky Map under the Apache 2.0 open source license.
[5] The project is presently available in the form of a GitHub repository.