Fig9_2 Turbulent interstellar gas

Fig9_2 Turbulent interstellar gas

Fig. 9.2 . Glowing hydrogen gas in a small region of the Omega Nebula, which is also designated as M 17. The wave-like patterns of gas have been sculpted and illuminated by intense ultraviolet radiation from young, massive stars, which lie outside the picture to the upper left. The ultraviolet radiation heats the surface of otherwise cold, dark clouds of interstellar hydrogen. (A Hubble Space Telescope image, courtesy of NASA/ESA/J. Hester, ASU.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University