High Velocity Clouds
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 High Velocity Clouds: Chemical Compositions, Unexpected Chemicals Detected in Interstellar Clouds, High-velocity Cloud
Famous quotes containing the words high and/or clouds:
“From the beginning, the placement of [Clarence] Thomas on the high court was seen as a political end justifying almost any means. The full story of his confirmation raises questions not only about who lied and why, but, more important, about what happens when politics becomes total war and the truth—and those who tell it—are merely unfortunate sacrifices on the way to winning.”
—Jane Mayer, U.S. journalist, and Jill Abramson b. 1954, U.S. journalist. Strange Justice, p. 8, Houghton Mifflin (1994)
“While fortune smiles, you’ll count your friends by scores;
If the sky clouds over, you will be alone.”
—Ovid (Publius Ovidius Naso)