Looks like you have a corrupted /var/lib/dpkg/available file, likely from a 3rd party source in your sources.list. googleearth is not a part of Ubuntu as it is illegal to distribute (as are the packages you downloaded).
Looks like you have a corrupted /var/lib/ dpkg/available file, likely from a 3rd party source in your sources.list. googleearth is not a part of Ubuntu as it is illegal to distribute (as are the packages you downloaded).