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What datum (reference ellipsoid) does Google Earth[1] use?

I can't seem to find where Google Earth tells explicitly what datum they use. I need some sort of valid link.

[1] The default free version that you download from Google.

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up vote 11 down vote accepted

WGS84, according to:

Cheers, Ryan

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Is it important for this question, that the geoid they use is not a perfect WGS84 geoid, but an EGM96 geoid which is a sphere?!msg/kml-support-advanced/… – Matthias Kuhn Apr 23 '13 at 7:18
Does Google's also use this datum for its Google Maps Geocoding API? – craig Sep 13 '15 at 3:17
EPSG 3857, or spherical Mercator, is an interesting one. Since they use a different datum for input and output.… – Vesanto Oct 30 '15 at 11:26

The heights on google earth refer to EGM96 and are, therefore, Geoidal heights. The lat/long are referred to the WGS 84 ellipsoid.

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That is pretty much the same as the SRTM C-Band data available on the net. – M. Mukul Oct 30 '15 at 11:16
Read… – M. Mukul Oct 30 '15 at 11:19

It is NAD27, according to google support:

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This is incorrect. The page you link to explicitly states: "Google Earth uses Simple Cylindrical projection with a WGS84 datum for its imagery base." – Fezter Apr 23 '13 at 6:46

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