Former astronaut Buzz Aldrin has spoken out for the first time since being hospitalised in New Zealand after being evacuated from Antarctica this month.
The 86-year-old had to be rushed to a hospital in Christchurch after a health scare during his big trip to the South Pole.
Speaking for the first time on the US-based Today Show, he explained what led to the dramatic evacuation.
"I got out of breath - you know, nothing new except it's a little more concentrated. It's cold, you've got a lot of heavy stuff and not enough air to breathe out there,'' he said.
Aldrin said he felt motivated to "press on'' to the South Pole.