And if the earth seems fairly limited, an update to the mobile version of Google Earth from earlier this year lets you pull back to 30,000 miles above the earth to see some of the surrounding stars. It's a great way to explore without leaving home. Voyager allows you to get more out of Google Earth by taking you on guided tours of points of interest as well as other countries and cultures.

If you want, you choose to share stories with others, which can come in handy for class projects or presentations. You're able to upload your own photos and videos to the site to add meaning and details to locations.

The mobile version syncs up with any info you've stored on the desktop version so you can look at the same places regardless of device.

As for mobile devices, you can also get a global view by downloading Google Earth for either Android or iOS.