a phone and some food
i would bring my room
-- food -- water -- air -- underwear & socks -- entertainment -- communications device -- something to read -- soap & toothpaste -- a heavy jacket -- your camera -- enough fuel to get back
I would study earth.
You would be the same age.
a lot
the human will die beacause there is no air on mars
How We Went to Mars was created in 1938.
No one went to Mars. It was an unmanned robotic expedition.
Refill what? Since there is nothing between Earth and Mars, it would be hard to refill with anything.
If you went to Mars, your mass would remain exactly the same. You would weigh considerably less. Mass is determined by a balance. Weight is determined by how hard you push down against gravity.
Oxygen level and different climate
yeah y not