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20 hours ago · The Sun is the star at the center of the Solar System. It is a massive, hot ball of plasma, inflated and heated by energy produced by nuclear fusion reactions at its core. Part of this energy is emitted from its surface as visible light, ultraviolet, and infrared radiation, providing most of the energy for life on Earth.
- Simple English
Sun. The Sun, also known as Sol, is a star at the center of...
- Stellar Evolution
Schematic of stellar evolution. Stellar evolution starts...
- Planetary Nebula
X-ray/optical composite image of the Cat's Eye Nebula (NGC...
- Plasma
Plasma (from Ancient Greek πλάσμα (plásma) 'moldable...
- Solar System
The Solar System is the gravitationally bound system of the...
- Sungazing
Sungazing is the unsafe practice of looking directly at the...
- Simple English
20 hours ago · The usual English proper name for Earth's natural satellite is simply Moon, with a capital M. The noun moon is derived from Old English mōna, which (like all its Germanic cognates) stems from Proto-Germanic *mēnōn, which in turn comes from Proto-Indo-European *mēnsis "month" (from earlier *mēnōt, genitive *mēneses) which may be related to the verb "measure" (of time).
- 405400 km, (404000–406700 km)
- 362600 km, (356400–370400 km)
- Earth I
- or
20 hours ago · Cold War. The Cold War was a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc, that started in 1947 and lasted to 1991.
20 hours ago · Non-binary [a] and genderqueer are umbrella terms for gender identities that are not solely male or female (identities outside the gender binary ). [2] [3] Non-binary identities often fall under the transgender umbrella since non-binary people typically identify with a gender that is different from the sex assigned to them at birth, [3] though ...
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- Gender identity
- Genderqueer
20 hours ago · Samarium is a chemical element; it has symbol Sm and atomic number 62. It is a moderately hard silvery metal that slowly oxidizes in air. Being a typical member of the lanthanide series, samarium usually has the oxidation state +3. Compounds of samarium (II) are also known, most notably the monoxide SmO, monochalcogenides SmS, SmSe and SmTe, as ...
- silvery white
- f-block groups (no number)
- 62
20 hours ago · calculus. (From Latin calculus, literally 'small pebble', used for counting and calculations, as on an abacus) [8] is the mathematical study of continuous change, in the same way that geometry is the study of shape and algebra is the study of generalizations of arithmetic operations. Cavalieri's principle.
20 hours ago · In monotheistic belief systems, God is usually viewed as the supreme being, creator, and principal object of faith. [1] In polytheistic belief systems, a god is "a spirit or being believed to have created, or for controlling some part of the universe or life, for which such a deity is often worshipped". [2] [3] Belief in the existence of at ...
