Change Surface Pen batteries

@uncutglobe on Instagram: "When astronauts return to Earth after long missions in space, gravity hits them harder than most people realize. In zero gravity, their muscles weaken, their sense of balance changes, and blood flows differently through the body. Once back home, many experience something called orthostatic intolerance, which can make them faint or feel lightheaded just from standing up because their bodies are relearning how to handle gravity. There are also lighter moments. After mont

How to use your Surface Pen