View Full Version : How Galaxies Lose Their Gas

2009-Dec-04, 07:00 PM
As galaxies evolve, many lose their gas. But how they do this is a point of contention. One possibility is that it is used to form stars when the galaxies undergo intense periods of star formation known as starburst. Another is that when large galaxies collide, the stars pass through one another but the gas [...]

More... (http://www.universetoday.com/2009/12/04/how-galaxies-lose-their-gas/)

2009-Dec-04, 07:56 PM
I think "all of the above" mentioned in the article. And, the intergalactic medium is more substantial than anyone previously thought. And galaxies do lose a lot of gas in tidal tails, as well as in star burst events. Like I said, all of the above.