Astronauts who arrive on Mars will need a lot of supplies to live and it could be very dangerous if they don’t have everything they need! There are currently two groups working towards sending people to Mars: NASA and a privately funded group called Mars One. The Mars One mission is a one-way ticket to Mars and they are trying to start a permanent human settlement on Mars beginning in 2026.

The reason it is a one-way ticket is because it takes much less infrastructure to send a one-way mission than a return mission. If they wanted to bring people back from Mars, they would need to send a return vehicle and a way to propel the return vehicle back into space. Instead, the one-way ticket means they just have to get people to the planet and they need fewer materials. The Mars One mission is planning on sending supplies to Mars before the crew arrives on the planet, which means they will know that they have supplies waiting for them. In addition to the Mars One mission, NASA has its own plans to send people to Mars. Instead of a one-way trip to Mars, NASA is developing ways to send round trip missions to Mars that last around 1,100 days.

They are planning on sending people to Mars in the 2030s. This is later than the Mars One group, but that’s because they want to develop the technology to bring people back safely from the planet. I’m not sure exactly what would happen if their supplies did not arrive on Mars. Perhaps the astronauts would have to find a way to use the resources available to them on Mars? It may be possible that NASA would be able to bring the astronauts back from Mars earlier than they had planned in the case of an emergency like that.

Thinking about sending people to Mars is very exciting! This is the next step in human exploration and there is so much we can learn about our solar system, Mars, and our own planet.

Stay tuned to the NASA website for updates on the Mars missions. We are sure to see some incredible achievements in the next 20 years.

Mars is a one-way trip because we can't carry enough supplies (fuel for the rocket) for the return trip. It takes a huge amount of fuel and materials for a shuttle to blast into space. But we may have better technology in the future to make a return trip possible.

We would hopefully send many shuttles to Mars at the same time (or send them very close together) so that many shuttles could help each other. There would also be a certain amount of survival supplies on each ship. However, there is always a chance that things can go wrong, and people could be stranded on Mars.

We think people would only be able to travel one way to Mars, because it takes so much fuel - so much energy - to get the people even one way to Mars, and there probably wouldn't be any way to get them back. The food and supplies would travel to Mars with the people. But I did read something about how people might be able to go to Mars and back, so some people think it might be possible. The question would be, how can we build a space ship that can get energy out in space that could be used to bring the people back?

It's not a one-way trip, just a really expensive one. Humans need gravity, and we don't know how much gravity. Building a spaceship that spins enough to simulate gravity is really expensive. Without gravity, the astronauts wouldn't have the strength to be able to do anything once they arrived on Mars and would just die. They would also die without supplies.