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A supernova's permanent designation is formed by the standard prefix "SN", the year of discovery, and a suffix composed of one to three letters of the Latin alphabet. The first 26 supernovae of the year receive a capital letter from A to Z. Subsequent supernovae of that year are designated with pairs of lower-case letters from "aa" to "az", and ...
The precise geometric center of the Earth's Sun, i.e. the arithmetic mean position of all points within the approximate spheroid that is the shape of the Sun. heliocentric With reference to, or pertaining to, the geometric center of the Earth's Sun; [14] centered upon the Sun, e.g. a heliocentric orbit. heliopause heliosphere
Heliophysics (from the prefix "helio", from Attic Greek hḗlios, meaning Sun, and the noun "physics": the science of matter and energy and their interactions) is the physics of the Sun and its connection with the Solar System. [1]
The following is an alphabetical list of Greek and Latin roots, stems, and prefixes commonly used in the English language from P to Z. See also the lists from A to G and from H to O . Some of those used in medicine and medical technology are not listed here but instead in the entry for List of medical roots, suffixes and prefixes .
Variable stars that do not have Bayer designations are assigned designations in a variable star scheme that superficially extends the Bayer scheme with uppercase Latin letters followed by constellation names, starting with single letters R to Z, and proceeding to pairs of letters. Such designations mark them as variable stars.
A spacecraft prefix is a combination of letters, usually abbreviations, used in front of the name of a spacecraft, and its purpose is often analogous to more conventional ship prefixes. This list does not include prefixes used on rockets , rocket launches , and spaceflights .
El [a] is a Northwest Semitic word meaning 'god' or 'deity', or referring (as a proper name) to any one of multiple major ancient Near Eastern deities. A rarer form, ' ila, represents the predicate form in the Old Akkadian and Amorite languages. [7]
Bust of the sun-god Helios, second century AD; the holes were used for the attachment of a sun ray crown, Ancient Agora Museum, Athens, Greece. Helios is the son of Hyperion and Theia , [ 24 ] [ 25 ] [ 26 ] or Euryphaessa, [ 27 ] or Basileia, [ 28 ] and the only brother of the goddesses Eos and Selene.