Hi! I’m David Saint-Jacques, Canadian Space Agency astronaut. Welcome aboard the International Space Station! Have you ever felt like you were moving, even though you were standing still? This illusion is known as vection, and it can be really confusing. Imagine experiencing this sensation while orbiting the Earth at 28,000 km an hour! Now imagine trying to control Canadarm2 at the same time! During such complex operations, we need to be really sure of the direction and speed of objects around us. So how exactly does this optical illusion affect astronauts in space? A Canadian science experiment called Vection is using virtual reality to study how the spaceflight environment changes the way we judge distances, and also how we interpret our own movement, without Earth’s gravity. With the help of the Canadian Space Agency, Dr. Laurence Harris and his team from York University’s Centre for Vision Research are leading this experiment. The results will help design safer ways to moving around the Station. They could also teach us more about disorders that affect movement and posture on Earth, like Parkinson’s disease. Vection is a great Canadian study tackling an interesting optical illusion no matter how you look at it!