MAP APPS, EARTH AND BEYOND

NASA app— “Google Earth Pro,” which used to cost $400 a year, is now free. It can print much more detailed images, import thousands of addresses at once to be pinned on a map, capture high def videos of what’s on the screen, and measure distances using paths, circles and other shapes. It can measure the acreage of an area quickly or open ESRI files, the common format for Geographic Information Systems.

— NASA App, a free app for Android and iPhone, has news stories, photos, and video.

— “Exoplanet,” free for iPhone/iPad, is all about planets orbiting other suns, not ours.

— “SkySafari 3,” $3, brings a planetarium full of insights to your iPad.

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