The precise distance of these planets from Earth is unknown but could range from 1,000 to 20,000 light-years-the distances scanned during the survey-bennett said.

In fact, according to the survey of 505 people who had moved back with their parents, a quarter had done so following a bad break-up, saying they needed distance or independence from their ex-partner.

GPS has been playing a very important role which can not be taken by the traditional survey techniques in long distance sea-spanning bridge construction.