Why Do Astronauts Wear Sunglasses in Space?

Because space has killer rays!

Why Do Astronauts Wear Sunglasses in Space?

If you've looked at astronaut photos and wondered why they are wearing sunglasses in some, there are some very good reasons for it. While sunglasses are not always needed, including when astronauts don a spacesuit, space shades are far from a fashion accessory.