I can't imagine what it's like to try and do science experiments in space without Earth's gravity.
Astronaut Kate Rubins has become the first person to sequence DNA in space using a compact device called the MinION. It allows astronauts to identify disease-causing microbes and diagnose certain illnesses in space instead of sending samples back to Earth. This could save time and resources when drugs and supplies are limited.
I think this is just one of the many exciting steps that could lead us to travel further into space and for longer.