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Could do with a history section edit
Who proposed it and proved it was practical ? Which mission first used it ? - Rod57 (talk) 14:06, 4 August 2016 (UTC)
How do the Chinese do it edit
The chinese DSN does not seem to offer a long baseline so does this limit accuracy or do they borrow time on foreign dish/antennae ? - Rod57 (talk) 18:36, 4 August 2016 (UTC)