* Astronomy

Members Login
Username 
 
Password 
    Remember Me  
Home -> Astronomy News -> Cosmology News -> Infrared background glow
Post Info TOPIC: Infrared background glow
Blobrana


L

Posts: 131433
Date:
RE: Infrared background glow
Permalink  
 

Astronomers report dark matter 'halos' may contain stars, disprove other theories

Could it be that dark matter "halos" - the huge, invisible cocoons of mass that envelop entire galaxies and account for most of the matter in the universe - aren't completely dark after all but contain a small number of stars? Astronomers from UCLA, UC Irvine and elsewhere make a case for that in the Oct. 25 issue of the journal Nature.
Astronomers have long disagreed about why they see more light in the universe than it seems they should - that is, why the infrared light they observe exceeds the amount of light emitted from known galaxies.
When looking at the cosmos, astronomers have seen what are neither stars nor galaxies nor a uniform dark sky but mysterious, sandpaper-like smatterings of light, which UCLA's Edward L. (Ned) Wright refers to as "fluctuations." The debate has centered around what exactly the source of those fluctuations is.
Read more



__________________
Blobrana


L

Posts: 131433
Date:
Permalink  
 

NASA's Spitzer Sees Light of Lonesome Stars

A new study using data from NASA's Spitzer Space Telescope suggests a cause for the mysterious glow of infrared light seen across the entire sky. It comes from isolated stars beyond the edges of galaxies. These stars are thought to have once belonged to the galaxies before violent galaxy mergers stripped them away into the relatively empty space outside of their former homes.
Read more



__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.
Home -> Astronomy News -> Cosmology News -> Infrared background glow


Create your own FREE Forum
Report Abuse 		Powered by ActiveBoard