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Astronomy Jargon 101: Coma

In this {collection}  {we have been} exploring the weird and wonderful {globe|planet|entire world} of astronomy jargon! You’ll be {encircled} by today’s {subject}: coma!

“Coma” {originates from} the Greek {term|phrase} for “{tresses|curly hair|locks}”, and it’s {furthermore} the origins of {the term} comet . When comets {come in} the sky, they don’t {appear to be} {a standard} star. Instead, {they’re} surrounded {by way of a} glowing halo, {and {occasionally} that halo {seems to} trail behind them,|and that halo {seems to} trail {in it} sometimes,} like long {tresses|curly hair|locks} in the wind.

However, {the majority of|many} comets spend {the majority of} their lives {with out a} coma. {It {just} appears {whenever a} comet gets too {near to the} Sun.|It {just} appears {whenever a} comet gets {near to the} Sun too.} When that happens, {heat} of {sunlight} turns ices {at first glance} of the comet into vapors, which {types} the coma. {Because the} comet gets {nearer to} {sunlight}, the coma grows {bigger}. {In some full cases,} the coma {will get} very {large|huge}, as large {because the} {size} of Jupiter. The coma of {the fantastic} Comet of 1811 {has been|had been} as large {because the} diameter of {sunlight}.

{

The solar wind pushes the coma in a {path} pointing {from} the Sun,|

The solar wind pushes the coma in a {path} pointing from {sunlight} away,} forming a tail. {When} a comet is {leaving behind|departing|making|causing} the {internal} solar system, {the tail leads {while watching} {entire body} of the comet itself.|the tail leads {while watching} physical body of the comet itself.} {{Once the} comet gets {too much} away,|When the comet {aside} gets too far,} {{the top} can freeze {once more} and the coma disappears.|{the top} can freeze again and the coma disappears once.}

{The normal} coma {includes} 90% water. {The rest} is {skin tightening and}, carbon monoxide, ammonia, methane, and oxygen. Dust grains form {a little} percentage.

Comets {employ a} special {invest} astronomical history. {For years and years} European astronomers thought {they} were atmospheric phenomena. {However in} the late 1500’s astronomer Tycho Brahe used precise parallax measurements to estimate {the length} to {a fresh} comet. {He {discovered that} the comet {needed to be} further away {compared to the} Moon,|He {discovered that} the comet {needed to be} away {compared to the} Moon further,} proving {they} had celestial origins.

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