Can life survive in space?
                     LIFE IN SPACE
INTRODUCTION
Outer space is an extremely hostile place. 
If you were to step outside a spacecraft, 
such as the International Space Station, or 
on a world with little or no atmosphere 
such as the moon or Mars without the 
protection of a space suit.
SOURCE: science.howstuffworks.com
BODY WEIGHT 
Living in space is not the same as living on 
Earth. In space, astronauts' bodies change. 
On Earth, our lower body and legs carry our 
weight. This helps keep our bones and 
muscles strong. 
In space, astronauts float. They do not use 
their legs much.
SOURCE: science.howstuffworks.com
HEART AND 
BLOOD CHANGE
The heart and blood change in space, too. 
When we stand up on Earth, blood goes to 
our legs. The heart has to work extra hard 
against gravity to move the blood all 
around the body. 
In space, without the pull of gravity, the 
blood moves to the upper body and head. 
Water in the body also does the same 
thing. 
SOURCE: science.howstuffworks.com
STAYING CLEAN
On Earth, people need to stay clean. In 
space, astronauts need to stay clean, too. 
Staying clean takes more work in space. In 
space, the astronauts do not have a 
bathroom as we have at home. 
But, they do have their own toothbrushes, 
toothpaste, combs, brushes, and shavers. 
These are kept in a Personal Hygiene Kit.
SOURCE: science.howstuffworks.com
STAYING CLEAN 
CONT.
In terms of bathing, astronauts bathes in 
different ways in space. They make use of 
special kinds of soaps and shampoo. These 
soaps do not need water to rinse and they 
are used with care so that the soap bubbles 
does not float over the place. 
After bathing, they make use of a towel to 
dry off without rinsing their bodies. These 
unique soaps and shampoo were made for 
patients in the hospital who cannot get into 
the water.
SOURCE: ng.opera.news
GARBAGE
Astronauts also have to take out garbage. 
There are four trash bins on the space 
shuttle. Three are for dry trash while one is 
for wet trash. Wet trash is anything that 
would smell bad. Each trash container has 
a trash liner placed outside. It is like a 
plastic garbage bag. 
SOURCE: ng.opera.news
WHAT 
ASTRONOUTS USE 
IN SPACE?
In space, the astronauts wipe the walls, 
floors, and windows to keep them clean. 
They use a soap that kills germs. 
The astronauts also use wet wipes to wash 
things. They use the same kind of wipes 
and cleanser on their forks, spoons, and 
eating trays.
SOURCE: science.howstuffworks.com
HEALTH IMPACT
Crew members have to exercise for more 
than two hours a day to counteract the loss 
of muscle and bone mass caused by living 
in microgravity. 
Because astronauts do not have to use 
their lower body muscles to walk or stand 
in space, their lower backs and leg muscles 
begin to lose strength unless they exercise 
regularly.
SOURCE: science.howstuffworks.com
FOOD
For foods, astronauts get to choose which 
meals they would like so long as the 
nutritional value and calories are kept 
within the approved requirement: 2800 
calories per day. 
There are several kinds of foods that are 
eaten in space such as the Rehydrated 
foods (tea, coffee, orange juice, oats, etc.), 
Thermo Stabilized foods (canned fruits and 
fish with deserts packaged in plastic cups), 
Irradiated foods (beef products sterilized by 
ionizing radiation), Fresh foods (apples, 
bananas, etc.) and Natural foods (nuts and 
cookies).
SOURCE: science.howstuffworks.com
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