Ejecta.html

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Ejecta can mean:

In volcanology, particles that came out of a volcanic vent, traveled through the air or under water, and fell back on the ground surface or on the ocean floor. Ejecta can consist of:
1. Juvenile particles - (fragmented magma and free crystals)
2. Cognate or accessory particles - older volcanic rocks from the same volcano
3. Accidental particles - derived from the rocks under the volcano.
In planetary geology, the debris that is ejected during the formation of an impact crater.
In astrophysics, material expelled in a stellar explosion.^[1]^[2]
1. In firearms ballistics, everything expelled from a gun, including the bullet, propellant, sabot, wad, etc.^[3]

References

^ The Plerionic Supernova Remnant G21.5-0.9: In and Out
^ (a detection by) The Advanced Satellite for Cosmology and Astrophysics (ASCA) http://heasarc.gsfc.nasa.gov/docs/asca/asca2.html
^ Randy Wakeman. "Controlling shotgun recoil". Chuck Hawks.

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