Among the millions of channels on YouTube is 'Dr Becky', an astrophysicist who is trying to encourage others into STEM careers (science, technology, engineering and mathematics).
As a research fellow at the University of Oxford, Dr Becky Smethurst specialises in black holes, but outside the day job she posts videos on all sorts of space-themed questions.
Her aim is to be someone in the world of scientific research that people can have a connection with.
