The process, which will eventually affect all TV viewers in the UK, involves the conversion of the country's terrestrial television system to digital.

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Panasonic showed off a system that can pipe terrestrial digital broadcasts into trains, coupled with a wireless system to allow commuters to hear a broadcast's audio via headsets without disturbing other passengers (hey, some of us like to work, read -- or sleep -- on the train).

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Each probe can pick up GPS signals and signals from eLoran, an enhanced version of Loran, the ground-based terrestrial radio-navigation system first used by the American and British navies during the second world war.

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Dr Murray stressed there was no direct evidence these stars did have Earth-sized planets in orbit about them, but modelling had shown that if sufficient terrestrial material existed in a system it would eventually clump together into bodies as big as the Earth.

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In simplified terms the system will be a hybrid network of satellite and terrestrial facilities tied to a ship cloud to transfer very large amounts of data and store it onboard.

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Dr. THOMMES: We had have ordered a few percent of systems that where the giant planets at least resemble the architecture in our own system, as to whether we would then have terrestrial planets in the habitable zone, the chances of that actually aren't too bad, because the terrestrial planets, we think, they kind of sprout like mushrooms pretty much anywhere.

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The National Observatory of Athens, for example, sent five messages by fax, email and by the Global Telecommunications System (GTS), which allows the transfer of meteorological data by satellite or via terrestrial meteorological centers.

UNESCO: MEDIA SERVICES