In the science fiction series "The Expanse," there are a few instances where characters are depicted surviving in open space for a short period without a space suit. While this portrayal may seem unrealistic from a scientific standpoint, it is important to remember that the series takes creative liberties and prioritizes dramatic storytelling over strict adherence to scientific accuracy.
In reality, exposure to the vacuum of space without proper protection, such as a spacesuit, would have severe and almost immediate consequences for a human. Here are some reasons why surviving in open space without a spacesuit is highly implausible:
Lack of oxygen: Space is a near-perfect vacuum devoid of air and oxygen. Without a spacesuit or a pressurized environment, a person would rapidly suffocate due to the absence of breathable air.
Temperature extremes: Space is extremely cold, reaching temperatures close to absolute zero. Additionally, the lack of an atmosphere means there is no medium to conduct heat away from the body. Without thermal insulation provided by a spacesuit, a person would quickly freeze. Conversely, objects exposed to direct sunlight would also experience extreme heat, leading to potential thermal injuries.
Radiation exposure: Space is filled with various forms of radiation, including solar radiation and cosmic rays. Earth's atmosphere and magnetic field shield us from a significant portion of this radiation. Without the protection of a spacesuit or spacecraft, prolonged exposure to space radiation would be harmful and potentially lethal.
Decompression and bodily harm: The lack of atmospheric pressure in space would cause fluids within the body to rapidly boil and create a range of immediate and severe injuries. This includes the formation of gas bubbles in bodily fluids, tissue damage, and the collapse of the lungs.
While the depiction of characters surviving in open space without a spacesuit may add dramatic tension to the story, it is important to recognize that it is purely fictional and not grounded in scientific reality. In reality, spacesuits and the technology that supports human survival in the harsh conditions of space are meticulously designed to provide the necessary life support and protection to astronauts.