There are many different kinds of scientists. One is a scientist that discovers things and studies them. Then there are the kinds of scientists that make things like cures for illnesses. Then they test it on things or people. All of these scientists become famous.
Scientists are people who help put together spaceships.
Their job is to say how much air the people in the spaceship needs. Scientists also help find cures for diseases. I think a scientist is a person who finds out how many planets there are. I think that they found out what a fraction is. I think that they're a person who sometimes puts their life on the line to find out some important work.