Interstellar media

The CRESU experiment (meaning Cinétique de Réaction en Ecoulement Supersonique Uniforme, or Reaction Kinetics in Uniform Supersonic Flow) is an experiment investigating chemical reactions taking place at very low temperatures. ...more on Wikipedia about "CRESU experiment"

Diffuse interstellar bands (DIBs) are absorption features seen in the spectra of astronomical objects in the Galaxy. They are caused by the absorption of light by the interstellar medium. About 100 bands are seen, in ultraviolet, visible and infrared wavelengths. ...more on Wikipedia about "Diffuse interstellar band"

Interstellar cloud is the generic name given to an accumulation of gas, plasma and dust in our and other galaxies. Put differently, an interstellar cloud is a denser-than-average region of the interstellar medium. Depending on the density, size and temperature of a given cloud, the hydrogen in it can be neutral ( H I regions), ionized ( H II regions) (ie. a plasma), or molecular ( molecular clouds). ...more on Wikipedia about "Interstellar cloud"

In astronomy, the interstellar medium (or ISM) is the matter and energy content that exists between the stars within a galaxy. The ISM plays a crucial role in astrophysics precisely because of its intermediate role between stellar and galactic scales. Stars form within the densest regions of the ISM, molecular clouds, and replenish the ISM with matter and energy through planetary nebulae, stellar winds, and supernovae. In turn, this interplay between stars and the ISM helps determine the rate at which a galaxy depletes its gaseous content, and therefore its lifespan of active star formation. ...more on Wikipedia about "Interstellar medium"

A superbubble is an astronomical term used to describe a cavity hundreds of light years across filled with 106 K gas blown into the interstellar medium by multiple supernovae and stellar winds. The Sun lies near the center of an old superbubble, whose boundaries can be traced by a sudden rise in dust extinction of stars at distances greater than a few hundred light years. ...more on Wikipedia about "Superbubble"

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