Doing a quick search of Google, I came across this website: Google Earth Outreach. However, it says that the Embed Gadget tool is no longer available. But, it is still possible to use the Google Earth API. All this being said, I have no idea if it will work or not inside of Canvas. If there is any embed code that you can harvest for your Canvas page, it may or may not work. Sometimes Canvas strips out some elements of embed code from certain websites...and so it makes whatever you were trying to embed not viewable.
Here's other search results...in case you would like to check out some other options: https://www.google.com/?ion=1&espv=2#q=embed%20google%20earth
Hope this helps, Sarah!
saw2112, I would love to see this in action if you can make it happen, maybe with the help of the people over in the Instructional Designers group, so I've shared your question with them. If you're not yet a member, it only takes a few clicks to join (click on the group, select the Actions dropdown at the upper right, and click "Join Group").