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Five innovative ways for Interplanetary Communication

Imagine that you're an astronaut who's been sent to establish a colony on Mars, where you spot something really incredible, and want to show it to your partners on earth. You might be able to

PTI Updated on: March 02, 2013 6:50 IST
1. An Internet That Works in Space


 
some scientists are working to develop a modified version of the Internet, which uses a new sort of protocol called disruption-tolerant networking (DTN).



Unlike the protocol used on Earth, DTN doesn't assume a continuous end-to-end connection will exist, and it hangs onto data packets that it can't immediately send, until the connection is re-established.

To explain how that works, NASA uses a basketball analogy, in which a player just holds onto the ball patiently until another player is open under the basket, rather than panicking and tossing up a wild shot or throwing the ball away.

In 2008, NASA ran its first test of DTN, using it to transmit dozens of images from a spacecraft located about 20 million miles  from Earth .
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