They can image its position from the radio waves; http://www.eurekalert.org/pub_...

		noselasd on Sept 14, 2013 \| parent \| context \| favorite \| on: Voyager 1 has been traveling for about a year thro... They can image its position from the radio waves; http://www.eurekalert.org/pub_releases/2013-09/nrao-v1s09121...