7 May 2016

Nasa balloon launched cancelled in Wanaka

11:43 am on 7 May 2016

Nasa's launch of a huge helium balloon in Wanaka has again been cancelled because of forecast strong winds.

The American space agency has been trying to launch the balloon for weeks but has been consistently thwarted by the weather.

The aim of the flight is to test the longevity of the balloon, which is designed to keep its volume as the air pressure and temperature changes.