plural noun[often treated as singular] Geology & Astronomy
Material that is forced or thrown out, especially as a result of volcanic eruption, meteoritic impact, or stellar explosion.
- Melosh et al. proposed that wildfires were ignited by the thermal energy radiated by re-entering ejecta following the asteroid impact.
- The stellar ejecta from the explosion initially trail behind the shock wave.
- Impact ejecta deposits show a non-linear decrease in thickness with radial distance from the centre of the source crater.
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