Why people can't stay on mars?
While we have not yet placed people on Mars, we may be able to do so in the future. As with any major human exploration, whether it is to climb Mount Everest or travel to the deepest point of the oceans, many obstacles are overcome when we send people to Mars (and bring them back home again). Will have to do.
First, building a spacecraft that can safely transport a crew to Mars will be a challenge. Astronauts living on the International Space Station (ISS) can receive supplies of food, water and other provisions as it is closer to Earth.
But the journey to Mars will last for six to nine months, depending on the relative positions of the planets from each other. The spacecraft would need to be self-sufficient, meaning that it would have to supply all the necessary supplies needed for the trip or to be able to produce them on board.
The spacecraft will also need to provide security for the crew. On Earth we are shielded/secure from the sun by a magnetic field, but in space we can be exposed to solar and cosmic radiation, which damages cells and increases the risk of cancer.
Cost of a ticket to Mars.
One of the biggest challenges of the manned Mars mission would be to keep the crew fit and healthy. Living in space for a long time can cause many strange things in the human body.
When we enter the microgravity environment of space (when astronauts can float) then the first thing that happens is that body fluids/float, which on Earth are “pulled” to the feet, are reduced and move towards the head and chest.
This causes astronauts to experience something called “puffy head, chicken legs”.
Other serious effects include bone and muscle changes. In space, bone density is reduced at the rate of 1% and muscle mass at the rate of 3% per month.
This is similar to the levels lost throughout the year during the ageing process for older people on Earth.
Losing such an amount of bone and muscle may not cause much problem in space. "Weightless" conditions mean that humans can perform apparent feats of supernatural power, such as an astronaut moving a satellite on its own.
However, when gravity re-enters the atmosphere, muscle and bone loss reduces physical performance and greatly increases the likelihood of fracture.
Currently the best remedy we need to combat these effects is exercise. Astronauts on the ISS exercise about 2.5 hours per day, doing a mix of cardiovascular (cycling, running) and resistance or weight training.
However, even with such an amount of exercise, the fitness of astronauts is reduced by 25% in just six months, so it is likely that crew on Mars will arrive in a weak and fragile state.
One way trip?
Once on the surface of Mars, the crew would again be exposed to gravity. But gravity on Mars is only 0.38g (about one third of Earth's gravity).
This means that roaming on the surface of the planet will be much easier than on Earth - even if any visitor has to wear a protective spacesuit - but crew members may not be able to replace the muscles and bone lost during the journey.
What is worrying is that if they are unable to change this muscle and bone on the surface of Mars (perhaps for about a year) they may not come home.
So scientists are looking at several ways to keep astronauts healthy during long-term space exploration, including the mission to Mars.
They are trying to make artificial gravity devices so that astronauts can take part of the Earth's environment with them. Another possibility is vibration platforms such as those currently used on Earth to help regenerate bones and muscles during aging.
Hopefully, this will mean that the crew can endure a two-year journey to Mars and ensure that our first trip to another planet is not a one-way trip.
Hello my name is suraj tiwari and i am the author of spacexstn site.my website will give you scientific knowledge for e.g. space and universe. If you have any query regrading Site, Advertisement and any other issue, please contact us.thank you.."
".
ConversionConversion EmoticonEmoticon