wellington former u.s. astronaut buzz aldrin second man walk moon advise doctor stay new zealand fluid lungs clear days evacuate south pole condition worsen 86-year-old adventurer visit pole part tourist group fly christchurch new zealand early friday congestion lungs team post detail medical evacuation antarctica weekend along picture good spirit official website well twitter well look christchurch look forward get home soon spend christmas family continue quest cycle pathways permanent settlement mar say website one photos twitter aldrin see read newspaper hospital bed tweet catch world stick quarantine manager christina korp travel antarctica post photos sunday take walk nurse inside hospital aldrin fighter pilot korean war join u.s. astronaut program july 20 1969 step moon 20 minutes neil armstrong take historic first step moonwalk part apollo 11 lunar land watch then-record television audience 600 million people former astronaut buzz aldrin stay new zealand lungs clear