Near-human is a classification referring to the physical appearance of members of a specific race, species or breed. Races possessing such characteristics are very similar to baseline Earth humans, but also possess notable differences which sets them apart and makes them easily distinguishible from humans as well as other races.
(See Also: Human; Humanoid)
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A nebula is an interstellar cloud of ionized gases such as hydrogen and helium and other celestial particles including dust which can be found in outer space. The plural form of nebula is nebulae. Nebulae are formed from the gravitational collapse of gas within the interstellar medium. As the material collapses under its own weight, massive stars may form in the center, and their ultraviolet radiation ionises the surrounding gas, making it visible at optical wavelengths. Some famous nebulae include the Horsehead Nebula, the Crab Nebula and the Eagle Nebula. Fictional nebulae include the Black Nebula, the Ghost Nebula and the Rata Nebula, all of which are featured in the continuity of the Star Wars expanded universe franchise.
(See Also: Nebulae category)
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A neutron is a subatomic hadron particle, no net electric charge and a mass slightly larger than that of a proton. With the exception of hydrogen-1, nuclei of atoms consist of protons and neutrons, which are therefore collectively referred to as nucleons. The number of protons in a nucleus is the atomic number and defines the type of element the atom forms. Neutrons are necessary within an atomic nucleus as they bind with protons via the nuclear force; protons are unable to bind with each other because their mutual electromagnetic repulsion is stronger than the attraction of the nuclear force.
(See Also: Neutron)
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A nurse is a healthcare professional who, in collaboration with other members of a health care team, is responsible for: treatment, safety, and recovery of acutely or chronically ill individuals; health promotion and maintenance within families, communities and populations; and, treatment of life-threatening emergencies in a wide range of health care settings. Nurses perform a wide range of clinical and non-clinical functions necessary to the delivery of health care, and may also be involved in medical and nursing research.