Some of the main reasons:
- Cost
- Lack of public support
- Time: It would take to get to and from Mars. Six months to get there, staying there for 18 months(waiting for Mars and the Earth to line up) and six months back.
- Physiological problems due to space travel like bone degeneration (from lack of gravity) and radiation exposure that we have not yet resolved.
- Psychological effects of prolonged space travel like limited room/ human contact.
- Limits of current technology to allow us to carry sufficient supplies (oxygen, water, food) the necessary distance
- Lack of appropriate habitat to support astronauts during the time they would have to stay on the planet's surface
- No real good reason to go. (Yes, it would be neat, epic even, from an historical standpoint, but Mars itself has not shown to have anything useful to people)
Because there is no air in space and no one has gone to Mars yet, just a robot.
many people have gone ot mars at canada. they go to there and back in a matter of years there have been many insodents that ocure in space like explosions and fires in the space shttles and this is a lode of rubbish so dont coppy it
no one has gone to mars yet but there's still curiosity the rover that went to mars
Mars is the only one, but no-one has gone there yet. It is very cold and the atmosphere can't be breathed.
no not yet
No one has gone to mars (YET)
Because they havent gone through puberty yet.
spell it right...no one knows we havent been there yet
No humans have yet gone to Mars. We have sent robot probes to the planet.
They havent gone through puberty yet.
No human beings have yet gone to the planet Mars.
If you havent gone to collage yet you need to go and then you go to medical school.
Because they havent gone through puberty yet.
Actually, NASA has had several missions to Mars, just none manned as yet.
Because there is no air in space and no one has gone to Mars yet, just a robot.
many people have gone ot mars at canada. they go to there and back in a matter of years there have been many insodents that ocure in space like explosions and fires in the space shttles and this is a lode of rubbish so dont coppy it
no one has gone to mars yet but there's still curiosity the rover that went to mars