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http://anitasnotebook.com/2011/03/the-story-of-the-pioneer-plaque.html

The Story Of The Pioneer Plaque – Beginning

Pioneer 10 was the first object made by humans to ever go past the solar system and travel into the universe at large. It was a spacecraft that was sent by NASA to methodically snap photos of Jupiter and beam them back to Earth. But it also carried with it pictures of it’s own that were etched into a small golden plaque. These pictures are intended to communicate very specific stories to anyone or anything Pioneer 10 might come across in it’s voyage across the galaxy.
Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth. You can travel throughout the solar system, to any of over 100,000 stars, or even beyond the galaxy. All movement in Celestia is seamless; the exponential zoom feature lets you explore space across a huge range of scales, from galaxy clusters down to spacecraft only a few meters across. http://www.shatters.net/celestia/

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