We are approaching three months now since Google added support for Google’s Moon, Mars and Sky imagery to the Google Maps API. Unfortunately we have not been inundated with Google Maps mash-ups that have taken advantage of these new astronomical features.

Michael Kosowsky of HeyWhatsThat.com was quick off the mark with his Cosmic Visibility Map. This map is a great tool for astronomers as it shows where all the planets are in the night sky and the horizon is custom-drawn on the map depending on what the time is and where you are located. Michael has also produced two maps showing the phases of the Moon and Mars.

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