International Space Station Quiz

Experts will be learning even more about the absence of gravity and its effect on human physiology, and will be developing edible products for long-term space travel. Before we earthlings can even think about traveling to Mars, we've got to find ways to make astronauts more self-sufficient for their supply of food, water, and oxygen.

Experts will be learning even more about the absence of gravity and its effect on human physiology, and will be developing edible products for long term space travel. Before we earthlings can even think about traveling to Mars, we've got to find ways to make astronauts more self-sufficient for their supply of food, water, and oxygen.

Each space-walker will wear a special suit known as an EMU: Extravehicular mobility/maneuvering unit. The EMU is very protective, down to the fingertip heaters, and "one size fits all." The other major protective equipment for the space-walkers is the jetpack life jacket. If an astronaut accidentally becomes untethered from the base, this foldaway device will prevent him or her from becoming lost in space.

Each space-walker will wear a special suit known as an EMU: Extravehicular mobility/maneuvering unit. The EMU is very protective, down to the fingertip heaters, and "one size fits all." The other major protective equipment for the space-walkers is the jetpack life jacket. If an astronaut accidentally becomes untethered from the base, this foldaway device will prevent him or her from becoming lost in space.

Each space-walker will wear a special suit known as an EMU: Extravehicular mobility/maneuvering unit. The EMU is very protective, down to the fingertip heaters, and "one size fits all." The other major protective equipment for the space-walkers is the jetpack life jacket. If an astronaut accidentally becomes untethered from the base, this foldaway device will prevent him or her from becoming lost in space.