Landing Safely on Mars | MARS: How to Get to Mars

to land a ship on mars that is capable

to land a ship on mars that is capable of being refueled and then being flown

of being refueled and then being flown

of being refueled and then being flown back to earth this is a very hard

back to earth this is a very hard

back to earth this is a very hard problem it’s a very dynamic higher entry

problem it’s a very dynamic higher entry

problem it’s a very dynamic higher entry speeds higher heating and less margin of

speeds higher heating and less margin of

speeds higher heating and less margin of error so we have an enormous momentum to

error so we have an enormous momentum to

error so we have an enormous momentum to take out now we use first a heat shield

take out now we use first a heat shield

take out now we use first a heat shield and the surface of the heat shield to

and the surface of the heat shield to

and the surface of the heat shield to give you a big push back it’s like when

give you a big push back it’s like when

give you a big push back it’s like when you are in the car and you stick your

you are in the car and you stick your

you are in the car and you stick your hand out and that starts slowing us down

hand out and that starts slowing us down

hand out and that starts slowing us down but that’s not enough to slow us down to

but that’s not enough to slow us down to

but that’s not enough to slow us down to the speed we need to go and then you

the speed we need to go and then you

the speed we need to go and then you need that very throw rocket you know to

need that very throw rocket you know to

need that very throw rocket you know to even slow you down further you wouldn’t

even slow you down further you wouldn’t

even slow you down further you wouldn’t need to carry fuel with you to fire in

need to carry fuel with you to fire in

need to carry fuel with you to fire in the opposite direction you’re going so

the opposite direction you’re going so

the opposite direction you’re going so that you will slow down and you need

that you will slow down and you need

that you will slow down and you need enough fuel to slow down to zero to then

enough fuel to slow down to zero to then

enough fuel to slow down to zero to then have a soft landing on the surface and

have a soft landing on the surface and

have a soft landing on the surface and then the realization where some of the

then the realization where some of the

then the realization where some of the first people ever to set foot on another

first people ever to set foot on another

first people ever to set foot on another planet