Angeliki Kapoglou, who took this photo, was selected to serve as a member of an international crew on the Mars Desert Research Station (MDRS), which simulates the environment on Mars in the Utah desert to develop knowledge needed to prepare for human exploration on the Red Planet. She writes:
"Unlike researchers in typical laboratory facilities ... crew members who live and work at MDRS are forced into a unique mindset, as if they themselves were exploring the surface of Mars and living in an early Mars habitat.
"For example we cannot go outside unless we are wearing our simulated spacesuits. ... We also have to eat dehydrated food and have very limited water usage. Only through such firsthand experience can we develop the knowledge that will prove critical for human safety and productivity on the surface of Mars."
You can see more photos from the series on Flickr.
"Your Photo Of The Day" is curated from our Flickr group. Submit your photos here. Copyright 2011 National Public Radio. To see more, visit http://www.npr.org/.