Sky Map is an Android application that works as a hand-held planetarium. It allows users to identify stars, planets, nebulae, and other astronomical objects. Originally developed as Google Sky Map, it is now an open-source application that has been donated for public use.

The application offers a comprehensive view of the night sky, including stars, constellations, their position, and deep space objects such as nebulae, galaxies, and star clusters. It also provides information about the solar system bodies, including the Sun, the Moon, dwarf planets, asteroids, and comets. Moreover, the app provides information about meteor showers, equinoxes, conjunctions, full/new Moon, and much more.

Overall, Sky Map is an excellent educational and reference tool for anyone interested in astronomy. Its user-friendly interface and accurate information make it an ideal choice for both beginners and advanced users.