Google Earth icon license is unknown, but permission to use was given at [1].
Source
Own work: File produced by me, released for whatever you want to use as long as you respect the three above licenses.
Author
This file is lacking author information.
Licensing
™ Wikimedia Foundation, Inc.
This file is (or includes) one or more of the official logos or designs used by the Wikimedia Foundation or by one of its projects. Use of the Wikimedia logos and trademarks is subject to the Wikimedia trademark policy and visual identity guidelines, and may require permission.
This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required.See Commons:Licensing.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.