Definition: ejecta: The material thrown from an impact crater during its formation.
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EJECTA BLANKET - Generally symmetrical apron of ejecta surrounding a crater; it is thick at the crater's rim and thin to discontinuous at the blanket's outer edge.
ejecta
material thrown about by an impact or volcano
electromagnetic radiation ...
Ejecta: Material thrown out from and deposited around an impact crater.
Electron microprobe: An instrument that analyzes the chemistry of very small spots by bombarding the sample with electrons and measuring the X-rays produced.
Ejecta
material from beneath the surface of a body such as a moon or planet that is ejected by an impact such as a meteor and distributed around the surface. Ejecta usually appears as a lighter color than the surrounding surface.
Ejecta
Pulverized rock scattered by meteorite impacts on a planetary surface.
Electroglow ...
ejecta
Material that is ejected. Used mostly to describe the content of a massive star that is propelled outward in a supernova explosion.
EJECTA
Ejecta is rocks, dust, and other material thrown from a volcano, , or exploding star.
ejecta -- Material thrown out of a volcano or impact crater.
Enceladus -- In Greek and Roman mythology, a giant, son of Titan and Gaea. Buried by an angry Zeus under Mount Etna.
The ejecta blanket and the circular rim of a crater are very bright in radar images because both are rough, with many facets oriented perpendicular to the radar illumination.
The ejecta blanket from the Imbrium Basin (which was formed by a gigantic meteor impact) was returned by Apollo 14 and found to be about 3.9 billion years old.
"While the ejecta does have to fly to higher elevations to be observed by Earth assets, a shadow cast by a large hill along the Cabeus ridge, provides an excellent, high-contrast, back drop for ejecta and vapor measurements," the posting said.
fluidized ejecta The ejecta blankets around some Martian craters, which apparently indicate that the ejected material was liquid at the time the crater formed.
ejecta (NASA Thesaurus) Matter ejected during impact cratering processes, usually meteoritic. ejection capsule (NASA SP-7, 1965) 1.
# Free expansion of the ejecta, until they sweep up their own weight in circumstellar or interstellar medium. This can last tens to a few hundred years depending on the density of the surrounding gas.
Evidence of subsurface ice prevails, especially in the form of petal-shaped ejecta blankets around some craters, vast areas of collapsed chaotic terrain, and so-called patterned ground at high northern latitudes.
Stratovolcanoes are tall conical mountains composed of lava flows and other ejecta in alternate layers, the strata that give rise to the name. Stratovolcanoes are also known as composite volcanoes.
In some areas secondary craters and ejecta from craters in heavily cratered terrain can be traced out onto intercrater plains. Thus, in these areas the plains are older than the cratered terrain.
The fallback of ejecta over a radius of a few thousand kilometers will last for about three hours. Seismic waves from each impact might be detectable for a day, and atmospheric waves for several days.
The outward expansion of solar ejecta into interplanetary space provides overdensities of plasma that are efficient at scattering high-energy cosmic rays entering the solar system from elsewhere in the galaxy.
is a large, icy, dark-colored, low-density outer moon of Jupiter that is scarred with impact craters and ejecta. It has a diameter of about 3,000 miles (4800 km), the second-largest moon of Jupiter; it is roughly the size of .
The plasma and other ejecta splashes at orbital or near-orbital speeds. It can be thrown off into space, or can travel several times around the planet before re-entering as secondary meteors.
The impact and exposure to space got rid of the volatiles in the ejecta mantle material. Such an impact was rare so is was not likely to have also occurred on the other terrestrial planets.
Its ejecta has been mapped across a fair portion of the planet, and the basin itself has a varied geology. It has terraced walls, consistent with most large impact basins in the solar system.
The impact will also cause an ejecta, or material, to fly out of the crater. Scientists are guessing that the amount of dust, ice and other materials that will fly out of the crater could fill 10 school buses.
This is the Crab Nebula, the leftover ejecta from a supernova explosion that took place in 1054 and was recorded in the records of Chinese astronomers. The remnant is kept glowing by energy from the rotating neutron star ("pulsar") at its center.
The narrow component of the spectral lines is produced by circumstellar gas, ionised as the shock breaks out of the star by the accompanying UV flash. The intermediate and broad components are produced by shocked, high-velocity supernova ejecta, ...
A meteoroid is a small chunk of material typically from a comet, asteroid, or ejecta material from a planetary impact. When a meteoroid enters the Earth's atmosphere and becomes visible, it is known as a meteor (or shooting star).
The enrichment of the IGM may go beyond supernova ejecta leaking from galaxies and clusters, back to the first generation of massive stars before galaxy formation proper occurred.
The ejecta continue to expand for thousands of years until they impinge on gas and dust clouds in the surrounding interstellar space.
(There is also minor seismic activity on the Moon.) If planetary scientists expect to reject the lunar volcanic ejecta theory of tektites then they would have to prove Stokes Law (a law that has been known over 100 years!) to be incorrect.
Measure the composition of the fresh matter, or ejecta, flying out of the crater.
Determine the changes in natural outgassing produced by the impact.
What had astronomers expected to see after the projectile plowed into the four-mile-wide comet?
Study chemical composition of icy satellites from ejecta particles. Many more objectives.
Oberon's heavily cratered surface has probably been stable since its formation. It has far more and larger craters than do Ariel and Titania. Some of the craters have rays of ejecta similar to those seen on Callisto.
They are not as well known as those of Saturn because they are fainter. The ruling theory about the production of the rings is they derive from meteorites impacting the many moons of Jupiter. The ejecta causes the dust that reflects light, ...
Images taken through red and near-ultraviolet filters were subsequently combined to produce the color image shown. A sequence of eight exposures was necessary to cover the object's huge dynamic range: the outer ejecta blobs are 100, ...
The star explodes in about ten seconds, leaving no remnant. The expanding cloud of ejecta glows brightly for many weeks as radioactive nickel produced in the explosion decays into cobalt and then iron.
 See also: Earth, Time, Solar, Crater, Light
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