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) (i.e. a plasma), or molecular (molecular clouds). Neutral and ionized clouds are sometimes also called diffuse clouds, while molecular clouds are sometimes also referred to as dense clouds.
Read more about Interstellar Cloud: Chemical Compositions, Unexpected Chemicals Detected in Interstellar Clouds, High-velocity Cloud
Famous quotes containing the word cloud:
“These boys who love their mother
who loves men, who passes on
her sons to other women;
The cloud across the sky. The windy pines.
the trickle gurgle in the swampy meadow
this is our body.”
—Gary Snyder (b. 1930)