The majority of maps features that matter are all here: traffic, turn-by-turn navigation, transit directions, walking directions, satellite view, street view, indoor photos, Zagat restaurant reviews, and a bit of integration with your Google profile.

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Pre-planning extends to knowing the physical location of the airport you fly into, too, as it relates to the city center, says Malin, who's made the mistake of choosing a cheaper flight into a satellite airport that required more transit time to reach the city center.

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In the lower left is a button that brings up your current location, and in the lower right is a tiny icon that lets you switch to satellite view, to see public transit and traffic information, or to launch the separate Google Earth app.

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While not quite as "nano" as the SIM card-sized satellites that launched with the Shuttle Endeavor, the smaller-than-a-breadbox ExoPlanetSat is still pretty tiny by satellite standards, yet it packs all the necessary optics and technology required for what's known as transit observation -- that is, monitoring a star for decreases in brightness, which could indicate a planet passing in front of it.

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