We all know what google earth is and use it often . Still for someone who dont know what it is, her,s a basic idea of what it is and what it is capable of.Google Earth is a virtual globe, map and geographic information program that was originally called Earth Viewer, and was created by Keyhole, Inc, a company acquired by Google in 2004. It maps the Earth by the superimposition of images obtained from satellite imagery, aerial photography and GIS 3D globe.

It is available under three different licenses:

  1. Google Earth, a free version with limited functionality;
  2. Google Earth Plus (discontinued), which included additional features;
  3. and Google Earth Pro ($400 per year), which is intended for commercial use

Google has released the new version 5.0 with some new features.Just have a look at what’s new in version 5.0

New! in Earth 5.0 (beta)

See global changes with decades of historic imagery

If you’ve ever wondered how your neighborhood has changed throughout time, Google Earth now gives you access to the past. With a simple click, check out suburban sprawl, melting ice caps, coastal erosion, and more.

Dive beneath the surface of the ocean

In the new ocean layer, you can plunge all the way to the floor of the sea, view exclusive content from partners like BBC and National Geographic, and explore 3D shipwrecks like the Titanic.

Track and share your paths with others

Take placemarks a step further and record a free-form tour in Google Earth. Simply turn on the touring feature, press record, and see the world. You can even add a soundtrack or narration to personalize the journey.

Download at http://earth.google.com