Ask Ethan: How Do I Become An Astrophysicist/Astronaut?

We all had dreams of what we wanted to be when we were younger. But how many of us grow up to achieve what the childhood versions of ourselves set out to be? Millions of people want to go to space, but only thousands have ever been. Scientists and doctors are never far from the list of what people want to be when they grow up, but only a small percent ever get there. So what advice would you give to a young teenager, at the start of their life, who wants to become an astronaut or an astrophysicist? We get our chance on today's Ask Ethan.