In any event, the bar will feed gas ejected by its stars to the nucleus.

Decretion disk is a circumstellar disk formed from gas ejected from the central star that now follows a near Keplerian orbit around it.

Assuming a near free-recoil condition, and neglecting the gases ejected from the barrel, then immediately after firing, conservation of momentum requires that the total momentum of the firearm and projectile is the same as before, namely zero.

Jet interactions with gas ejected before the merger explain much of the burst's different nature.

Only that instead of using a high-temperature gas ejected at thousands of feet a second, we'll use a high-voltage ion ejected at thousands of miles a second.

A stellar wind is a flow of neutral or charged gas ejected from the upper atmosphere of a star.

Clusters have two important properties: their masses are large enough to retain any energetic gas ejected from member galaxies and the thermal energy of the gas within the cluster is observable within the X-Ray bandpass.

A planetary nebula is an expanding cloud of gas ejected from a star that is nearing the end of its life.

The colorful, intricate shapes in these NASA Hubble Space Telescope images reveal how the glowing gas ejected by dying Sun-like stars evolves dramatically over time.

A planetary nebula, more correctly known as a stellar-remnant nebula, is an emission nebula consisting of an expanding glowing shell of ionized gas ejected during the asymptotic giant branch phase of certain types of stars late in their life.