Come Tuesday, weather permitting, Austrian daredevil Felix Baumgartner will attempt to be the first individual to break the sound barrier in free fall. The mission will take Felix approximately 23 miles above Earth in a small space capsule. Then, he will step out of the capsule and plunge to Earth, aiming to reach speeds that exceed 690 mph. The vessel is equipped with 15 cameras so that the entire Red-Bull sponsored event can be broadcasted live online. It’s a death-defying stunt that will test the limits of the human body in one of the most brutal environments: Air pressure is practically nonexistent and temperatures can plummet to negative 70 degrees Fahrenheit. Our friends at BusinessInsider put together an interesting collection to show you how the stunt will happen step by step.