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Kryptonians are an extraterrestrial race of humanoids within the DC Comics universe that originated on the planet Krypton. The term originated from the stories of DC Comics superhero, Superman. The stories also use "Kryptonian" as an adjective to refer to anything created by or associated with the planet itself or the culture that existed on it. Members of the dominant species of the planet Krypton are indistinguishable from humans in terms of their appearance; their physiology and genetics, however, are vastly different-in some continuities Kryptonians are difficult to clone because their DNA is so complex that human science is unable to decipher it. The cellular structure of Kryptonians allows for solar energy to be absorbed at extremely high levels. On the planet Krypton, whose sun was an ancient red supergiant with a relatively low energy output, their natural abilities were the same as humans. When exposed to a young yellow star like Earth's Sun, which is much smaller than their own sun and with a vastly higher energy output, their bodies are able to absorb and process so much energy that it eventually manifests as vast superhuman powers (such as superhuman strength, superhuman speed, invulnerability, flight, x-ray vision, heat vision, and superhuman senses). Almost all Kryptonians were killed when the planet exploded shortly after the infant Kal-El was sent to Earth. In some continuities, he is the planet's only survivor. ==Physiology and powers== Kal-El can lead a double life as Clark Kent because Kryptonians are indistinguishable from humans. Also in Silver Age and Modern continuity Kryptonians have more than one ethnic group, such as dark-skinned Kryptonians from Krypton's Vathlo Island that resembles Earth humans of Sub-Saharan African descent, and a group from the continent of Twenx that resembles Earth Asian and Latino peoples. In the first stories about Superman's origins, all Kryptonians possess on their homeworld the same powers Superman has on Earth. In later depictions, their abilities are attributed to the differences between Earth's gravity and that of Krypton and the different radiation of the stars they orbit. Kryptonians use solar energy from yellow, blue, orange or white stars on the cellular and molecular levels to gain superhuman abilities. The light of dwarf stars, pulsars, and quasars also grants Kryptonians different abilities.〔''Superman: Earth One''〕 Some stories also show that Kryptonians have bioelectric fields that surround their bodies and protect them from harm 〔e.g., ''All-Star Superman''〕 and which are the means by which Kryptonians fly. Certain individuals (including Conner Kent, Chris Kent, and some Phantom Zone criminals) have sometimes been depicted with "tactile telekinesis". The abilities of Kryptonians evolve and grow more powerful as Kryptonians age and develop.〔''Smallville''〕 Mating between Kryptonians and other species is difficult because Kryptonian DNA is so complex as to be nearly incompatible with that of other species. The only notable exception is represented by the original native Daxamite population (the race that bore that name before intermingling with the Kryptonian explorers who later adapted the name for themselves). Breeding between Kryptonian explorers and this race created a new Kryptonian hybrid race that could interbreed with a larger number of humanoid races—including Earth humans. No other races are yet known to exhibit the same degree of compatibility of the Native Daxamites.〔''Superman Annual'' #14 (2009)〕 Super powered Kryptonians are vulnerable to Kryptonite, radioactive remnants of Krypton, magic, and black holes. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Kryptonian」の詳細全文を読む スポンサード リンク
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