Botanist Linda Leigh will exit this afternoon from 21 days inside an airtight , 17,000 cubic foot glass and steel structure , a test module for Ares II , a $ 30 million project under construction . Eight people will be placed inside a much larger sealed structure for two years to determine whether they can duplicate Earth 's biological diversity for possible use in space . She says the only thing she misses is companionship , but she is otherwise content being in frequent contact with the outside support team by telephone , video , radio , and just looking through the glass window . Water for drinking, cooking and showering is dehumidified from the air. Daily medical tests have shown her health is unbelievably positive .
Botanist Linda Leigh will exit this afternoon from 21 days inside an airtight , 17,000 cubic foot glass and steel structure , a test module for Ares II , a $ 30 million project under construction . Eight people will be placed inside a much larger sealed structure for two years to determine whether they can duplicate Earth 's biological diversity for possible use in space . She says the only thing she misses is companionship , but she is otherwise content being in frequent contact with the outside support team by telephone , video , radio , and just looking through the glass window . Daily medical tests have shown her health is unbelievably positive .