Radio astronomers have now made a new map of the radio sources near our galaxy's core.

BBC: By BBC News Online Science Editor Dr David Whitehouse

As the game goes on, you find yourself climbing radio towers to unveil the map around you, then picking apart enemy outposts to clear the roads of hostiles.

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We had an airplane running flawlessly, we had real-time weather displayed on a large-screen map, and we had XM Satellite Radio to make the hours pass.

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As the balloon rose, the team was able to map its progress using Google Earth via the craft's on-board radio receiver.

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It includes ideas on how to celebrate the Day, messages from radio personalities, audio reportages as well as texts that can used freely and an interactive map featuring information about events scheduled to take place in places such as London, Nairobi and Madrid to mark the Day.

UNESCO: MEDIA SERVICES

One of the most visible belonged to the late songstress Kate Smith ("When the Moon Comes Over the Mountain"), whose 1930s and '40s radio show helped--along with the 1932 Winter Olympics--put Lake Placid on the map.

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