Volatiles
On the basis of isotopes studies, the terrestrial planets appear to have lost volatiles at some stage. Mars is enriched in 15N, probably implying that nonthermal escape allowed 14N to preferentially escape.
Volatile elements:
Since the late 1940s, important advances have been made in the chemical analysis of both meteorites and the Sun. A remarkable result has emerged from this work.
VOLATILE ELEMENTS - Chemical elements thatcondense (or volatilize) at relatively low temperatures. The opposite of volatile is refractory.
volatiles
chemical compounds that are gaseous at low temperatures
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Volatile organic compounds are organic chemical compounds that have high enough vapor pressures under normal conditions to significantly vaporize and enter the atmosphere....
s (VOC), which form ozone.
of mercury
Mercury (element) ...
Volatile- As a noun, this refers to substances that are gases at ordinary temperatures. In astronomy it includes Hydrogen (H), Helium (He), water (H20), ammonia (NH3), carbon dioxide (CO2), and methane (CH4) ...
Volatile - Element or compound that vaporizes at low temperature. Water and carbon dioxide are examples of volatiles
Waning Crescent - The Moon's crescent phase that occurs just before new moon ...
What volatiles are important at Mercury?
Mercury is surrounded by a thin envelope of gas - an exosphere - containing hydrogen, helium, oxygen, sodium, potassium, calcium and magnesium.
[edit] Volatiles exhausted
Main article: Extinct comet
Jupiter family comets (JFC) and long period comets (LPC) (see "Orbital characteristics", below) appear to follow very different fading laws.
Volatile
Ammonia
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volatile - (n.)
The property of being easily vaporized. Volatile elements stay in gaseous form except at very low temperatures; they did not condense into solid form during the formation of the solar system.
volatile organic compounds - (n.) ...
As volatiles boil or sublimate from comets, they carry small solid particles with them. Particles released from comets in this way becomes a source for meteoroids, causing meteor showers as the Earth passes through them.
Mars Volatiles and Climate Surveyor (MVACS) would have studied water and carbon dioxide around the landing site. The 37-lb. device was to scoop up soil samples to be tested by other instruments aboard the lander.
A dark-violet volatile solid element belonging to the halogens.
Symbol: I; m.p. 113.5°C; b.p. 184°C; r.d. 4.93 (20°C); p.n. 53; r.a.m. 126.90447.
Ion ...
Silver tells a volatile story of Earth's origin: Water was present during its birth PhysOrg - May 13, 2010 ...
Methane is very volatile and its presence shows either that has always resided in the distant reaches of the solar system where it is cold enough for methane ice to persist, ...
A boundary-layer volatiles diurnal behavior and location also helps to distinguish it from clouds and limb haze.
Also called nonvolatile storage. permeability 1. Of a magnetic material, the ratio of the magnetic induction to the magnetic field intensity in the same region. 2. The ability to permit penetration or passage.
Lunar samples brought back by the Apollo astronauts show that compared to the Earth, the Moon is deficient in iron and nickel and volatiles (elements and compounds that turn into gas at relatively low temperatures) such as water and lead.
When you begin to partially melt the differentiated, olivine/pyroxene-dominated portion of the lunar mantle, there's still going to be a little bit of volatile material left, even though most of that would have fractionated out.
Whipple set forth in 1950 the so-called dirty snowball model, according to which the nucleus is a lumpy piece of icy conglomerate wherein dust is cemented by a large amount of ices--not only water ice but also ices of more volatile molecules.
We can follow the trail to the right in the diagram to the IDPs that contain the most volatile and primitive elements. The trail takes us first from interplanetary dust particles to chondritic interplanetary dust particles.
CI1 denotes that the meteorite is the most primitive in terms of volatile/elemental retention (the highest known degree of primitivism) and is the most aqueously altered. Ivuna fell in Tanzania in 1938.
For example, Moon rocks lack both iron and easily vaporized 'volatile' elements.
Comets, which are composed largely of volatile ices and whose orbits are highly eccentric, generally having a periapsis within the orbit of the inner planets and an apoapsis out past Pluto.
As a result, water and other substances that existed as volatile gases and liquids in the inner nebula were frozen into ices and supplemented the mass of disk materials being accreted into large protoplanets.
What happens to comets after they have lost their volatile materials?
What mechanism(s) perturb comets from their origin in the Oort cloud into orbits that take them into the inner solar system?
material of solar composition with the volatile components removed), were heated, perhaps by short-lived radionuclides or solar magnetic induction, to the point where their interiors melted and geochemical processes occurred.
Certain temperatures must not be exceeded or volatiles will evaporate resulting in substandard glass. This same procedure occurs in erupting volcanoes, giving us obsidian or volcanic glass.
Reproduced with kind permission of the Guildhall Library, Corporation of London: MS1758Robert Hooke and John Flamsteed had a volatile relationship.
Although occasionally visible at much larger distances due to the sublimation of the more volatile carbon monoxide, this envelope of gas and dust usually begins to form when the comet reaches about 2 - 3 astronomical units (AUs), ...
Gradually all volatile material such as ice evaporates, the showy tail thins out and disappears, and all that's left of the comet are grains of rocky stuff which gradually disperse along its orbit.
After several hours, the comet will become a crater-filled ice ball as the more volatile carbon dioxide sublimates before the water ice melts. Real comets are also depleted by sublimation each time they come near the Sun.
A solar system-wide rain of projectiles had a profound effect on all of the planets, delivering volatiles and organic material from the colder outer solar system to the inner planets while at the same time causing frequent, catastrophic impacts.
You have to remember the time that Copernicus lived in was pretty volatile. During his life
1517 - Martin Luther posted his theses on the church in Wittenberg, critical of the Catholic church.
achondrite: Stony meteorite containing no chondrules or volatiles.
Moon rocks contain few volatile substances (e.g. water), which implies extra baking of the lunar surface relative to that of Earth.
Some of the NEAs with highly eccentric orbits appear to actually be extinct "short period" comets that have lost all their volatiles, and in fact a few NEAs still show faint comet-like tails.
If a comet's orbit takes it close to the Sun, the solar radiation will cause the volatile materials in the comet to vaporize, carrying some of the dust along with them.
Polonium is a volatile metal and evaporates with time. It is also strongly radioactive; a quantity of polonium quickly reaches a temperature of a few hundred degrees C because of the alpha emission.
Where then did Earth's volatile gases, particularly water, and the recently discovered ice on Mercury and the Moon, come from?
As this happens the vast mass of the star collapses in on itself and the core becomes incredibly upset and volatile. This causes a tremendous reaction and the star blows itself apart.
When heated by the Sun in the inner solar system they liberate gasses and dust, which give them the typical cometary appearance. Nevertheless, it is believed that old comets, which have lost most or all of their volatiles, may become dormant, ...
Ganymede and Callisto, at greater distances, are composed largely of water ice and have low densities. During the formation of both planets and satellites, proximity to the central body (the sun or Jupiter) evidently prevented the more volatile ...
The general trend is that the further out one goes from the sun, the more the planets contain volatile elements (materials that exist as gases at relatively low temperatures).
That atmosphere was lost to space, and replaced by compounds outgassed from the crust or (in some more recent theories) much of the atmosphere may have come instead from the impacts of comets and other planetesimals rich in volatile materials.
This is based on a theory that the infant Jupiter, like a weaker version of the early Sun, would have emitted enough heat to prevent volatile, low-density material from condensing and being incorporated into the closer moons.
gas chromatography (NASA Thesaurus) A method of chemical analysis involving the separation of volatile constituents of a mixture by means of gas flow entrainment, vapor pressure differences, ...
 See also: Earth, Solar, Time, Planet, Solar System
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