Depression may be challenging to assess in a patient with dementia. In patients with AD, the presence of depression may range from 6% to 30%, depending on the diagnostic criteria employed (Cummings et al., 1995). The prevalence and course of depression in dementia are controversial, due to several confounding factors.
Astronauts use space shuttles(trasport people and equipment), Space probes (robotic exploration, Spacecrafts (trasport crew, equipment, and other technologies).
Space can be dangerous. Astronauts need a space suit that protects them from extreme hot and cold. The space suit must have air so that astronauts can breathe. Astronauts can work outside in space if they're wearing a spacesuit. Maybe one day you'll be able to go to space on holiday! Scientists are working on spaces suits that tourists can wear. Click on the picture to find out more about NASA space suits.