Space

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“	Space: the final frontier. These are the voyages of the Starship Enterprise. Its five-year mission: to explore strange new worlds. To seek out new life and new civilizations. To boldly go where no man has gone before!	„
	~ Captain James T. Kirk in the original Star Trek series

Background

Space is a natural common setting in fiction, it is a vacuum, meaning that sound cannot be carried because molecules are not close enough together to transmit sound between them. That's not to say that space is empty, however. Gas, dust, and other bits of matter float around "emptier" areas of the universe, while more crowded regions can host planets, stars, and galaxies. Characters tend to commonly be able to act in the vacuum of space with no repercussions, leaving people to at times give resistance to characters, however, some of the resistance comes from common misconceptions about space.

General Information

Name: Space, Outer Space

Origin: Real World

Age: Approximately 13.8 billion years old

Size: 28.5 gigaparsecs for the observable universe

Weight: Unknown (We are only aware of 5% of the universe's visible matter)

Environment: Void

Resources: Plenty of different resources depending on the planetoid, planet, exoplanet, stars, etcetera.

Status: Active (The universe is theorized to end at the earliest, 22 billion years from now)

Codex Statistics

Cardinality: ℵ0 (Space will continue to expand forever)

Dimensionality: 3+1-D (Space is the entirety of the 3+1-D spacetime model)

Range: Universal

Effects

These effects come from the Vacuum of Space

Large Size (Universal; Space's observable universe is 28.5 gigaparsecs), Gravity Shifting (While the effects of space suit malfunction or decompression on the human body are important to recognize, long-term consequences of spaceflight are perhaps more relevant. Many of the immediate physiological impacts of spaceflight are attributed to microgravity, a term that refers to very small gravitational forces. Because life on Earth has evolved to function best under Earth’s gravity, arguably all human organ systems are affected by gravity’s absence. The body is highly adaptive and can acclimatize to a change in gravitational environment, but these physiological adaptations may have pathological consequences or lead to a reduction in fitness that challenges a space traveler’s ability to function normally upon return to Earth), Biological Manipulation (On Earth, the cardiovascular system works against gravity to prevent blood from pooling in the legs, thus microgravity results in a dramatic redistribution of fluids from the legs to the upper body within only a few moments of weightlessness. This phenomenon is colloquially known to astronauts as “puffy face” or “bird legs”, referencing the prominent facial swelling and 10-30% decrease in leg circumference. Although fluids return to a somewhat normal distribution within 12 hours, astronauts often complain of nasal stuffiness and eye abnormalities after extended stays in space, which are likely symptoms of the increased intracranial pressure, or pressure within the skull. Furthermore, there is a reduction in blood volume, red blood cell quantity, and cardiac output due to lower demands on the cardiovascular system to counteract gravity. This acclimation is physiologically normal and presents no functional limitations in space, but upon return to Earth’s gravity, one of every four astronauts is unable to stand for 10 minutes without experiencing heart palpitations or fainting. Because more than half of the muscles of the human body resist gravitational force on Earth, musculoskeletal acclimation to microgravity results in profound muscle atrophy, reaching up to 50% muscle mass loss in some astronauts throughout long-term missions. The muscular atrophy seen in astronauts closely mirrors that of bedridden patients, and upon return to Earth, some astronauts experience difficulty simply maintaining an upright posture. Diminished burden in space on load-bearing bones, such as the femur, tibia, pelvic girdle, and spine, also causes demineralization of the skeleton and decreased bone density or osteopenia. Calcium and other bone-incorporated minerals are excreted through urine at elevated levels, thus the microgravity environment puts individuals at risk not only for bone fracture but for kidney stones as well. The vestibular and sensorimotor systems, our bodies’ sensory networks that contribute to a sense of balance and motor coordination, respectively, are also impacted by microgravity. The majority of astronauts experience some level of space motion sickness or disorientation for the first few days in space, and these symptoms generally subside as the body acclimates; however, some astronauts still feel wobbly months after returning to Earth. Furthermore, normal sleep cycles appear to be affected, as astronauts consistently sleep less and experience a more shallow and disturbed sleep in space than on Earth. This may be due to a combination of microgravity or an altered light-dark cycle in space), Cosmic Radiations (Many astronauts complain of bright flashes that streak across their vision while trying to sleep, attributed to high-energy cosmic radiation. The Earth’s atmosphere acts as a shield to block many harmful types of space radiation, but humans are dangerously exposed to this radiation in outer space. Ultraviolet (UV) radiation from the sun is largely absorbed by the Earth’s atmosphere and never reaches its surface, but a human unprotected in space would suffer sunburn from UV radiation within seconds. UV rays can be blocked with specially designed fabric in spacesuits and shielding on spacecraft, but higher energy ionizing radiation and cosmic rays—high-energy protons and heavy atomic nuclei from outside our Solar System—can penetrate shielding and astronauts’ bodies alike, potentially having severe health implications. Damaging radiation of this type can cause radiation sickness, mutate DNA, damage brain cells, and contribute to cancer. Several studies also suggest that cosmic radiation increases the risk of early-onset cataracts, and contributes to astronauts’ increased likelihood of acquiring viral and bacterial infections due to immune system suppression), Oxygen Deprivation (The absence of normal atmospheric pressure (the air pressure found at Earth’s surface) is probably of greater concern than temperature to an individual exposed to the vacuum of space. Upon sudden decompression in a vacuum, the expansion of air in a person’s lungs is likely to cause lung rupture and death unless that air is immediately exhaled. Decompression can also lead to a possibly fatal condition called ebullism, where reduced pressure of the environment lowers the boiling temperature of body fluids and initiates the transition of liquid water in the bloodstream and soft tissues into water vapor. At minimum, ebullism will cause tissue swelling and bruising due to the formation of water vapor under the skin; at worst, it can give rise to an embolism, or blood vessel blockage due to gas bubbles in the bloodstream. Our dependence on a continuous supply of oxygen is the more limiting factor to the amount of time a human could survive in a full vacuum. Contrary to how the lungs are supposed to function at atmospheric pressure, oxygen diffuses out of the bloodstream when the lungs are exposed to a vacuum. This leads to a condition called hypoxia, or oxygen deprivation. Within 15 seconds, deoxygenated blood begins to be delivered to the brain, whereupon unconsciousness results. Data from animal experiments and training accidents suggest that an individual could survive at least another minute in a vacuum while unconscious, but not much longer)

Notable Features

• Inhabitants: Humans on the Planet Earth (Other life in space has not been officially found or recognized, even currently with Mars there has been no true conclusive evidence of life existing on it)
• Areas: Solar System, Milky Way Galaxy
• Objects: Black Hole, Planets, Stars, Solar Systems, Galaxies, Galactic Clusters, Superclusters, etcetera.
• Events: Supernova, Gamma Ray Burst

Other

Issues: We only know approximately 5% of the universe, with 95% of it being a huge mystery. Along with this we have only explored past our solar system. Due to this, there is a lot about space we do not truly know.

Misconceptions

• Extreme Colds: A common misconception is that outer space is cold, but in truth, space itself has no temperature. In thermodynamic terms, the temperature is a function of heat energy in a given amount of matter, and space by definition has no mass. Furthermore, heat transfer cannot occur the same way in space, since two of the three methods of heat transfer (conduction and convection) cannot occur without matter. What does this mean for a person in space without a spacesuit? Because thermal radiation (the heat of the stove that you can feel from a distance, or the Sun’s rays) becomes the predominant process for heat transfer, one might feel slightly warm if directly exposed to the Sun’s radiation, or slightly cool if shaded from sunlight, where the person’s own body will radiate away heat. Even if you were dropped off in deep space where a thermometer might read 2.7 Kelvin (-455°F, the temperature of the “cosmic microwave background” leftover from the Big Bang that permeates the Universe), you would not instantly freeze because heat transfer cannot occur as rapidly by radiation alone.

It should be noted the only cases where one resisting the cold is allowed is if they were in space for about or more than 12-26 hours. Though as noted above with the colds this cold resistance would not be all that impressive.

• Exploding in Space: Space is a near-vacuum, which means that people can't survive out there for more than a few minutes—but exploding isn't a concern. A body exposed to space will expand and bloat, especially the air in the lungs and the water in body tissue, but human skin is tight enough to prevent exploding. A person exposed to space would eventually die when circulation stops, after dissolved gases in the blood form bubbles and block flow. It's like an extreme version of "the bends" that divers can get.

• Zero Gravity: Gravity is considered the most important force in the universe, and it doesn't just go away when we leave Earth. Gravity is necessary for everything from the Moon's ability to orbit the Earth to the Sun staying put in the Milky Way. What astronauts experience in space is what NASA calls microgravity. It has nothing to do with the actual strength of gravity, which is only very slightly less on the International Space Station. It's because astronauts are constantly falling, so they seem weightless.

Sources

The majority of the info regarding space’s effects comes from here. Some of the misconceptions come from here.