EFFECTS OF SPACE TRAVEL

Travel Venturing into the environment of space can have negative effects on the human body. ...

Additional symptoms include fluid redistribution (causing the "moon-face" appearance typical in pictures of astronauts experiencing weightlessness),

loss of body mass, nasal congestion, sleep disturbance, and excess flatulence.

Imagine you are strapped into your seat in the space shuttle on the launch pad, ready for liftoff. The countdown comes to an end "5.4.3.


2. 1. Ignition!" The rockets fire, and you feel yourself being pushed into your seat as the shuttle heads into the sky. The push you feel is called G-force.


It makes your body feel up to three times heavier than usual. You can get an of what this feels like when you are in an elevator and it starts going up.


But when you get into orbit, the G-force stops. Suddenly, you feel you have no weight at all! You become weightless.


We call this state zero gravity, or zero g, because it feels as if the earth's gravity, or pull, has gone.


Weightlessness affects everything you do in space walking, eating, drinking, and sleeping. 

SPACE SICKNESS


Up in orbit, it may be fun floating about and performing somersaults and other gymnastics.


But your body isn't used to it, and you will probably feel sick. At least half of all astronauts suffer from space sickness. But after two or three days, your body gets used to the strange state, and the sickness stops.


On a long trip in space, weightlessness causes more serious problems. With no gravity to battle against, your muscles become weak and start to waste away.


To prevent this, you must exercise regularly. On the shuttle, you can use a treadmill for exercise. On the Soviet space stations, the cosmonauts exercise on bikes that are fixed to the floor.


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