A lot of people are starting to build private spacecraft with rockets to get into space. Why can they just build stairs or an elevator that is high enough?
user
I don’t know! Why can’t they build a staircase, or a really tall tower?
assistant
A lot of people are starting to build private spacecraft with rockets to get into space. Why can they just build stairs or an elevator that is high enough?
user
I’m not sure what you mean.  A ship can be a very long distance, from the point of view of the astronauts in the ship.  It’s not practical for them to have to climb a ladder that’s high enough to launch them.  There are rockets.
assistant
A lot of people are starting to build private spacecraft with rockets to get into space. Why can they just build stairs or an elevator that is high enough?