Media Information
 
 
 
Collection:
NASA Astronomy Picture of the Day Collection
Title:
Breaking Distant Light
Explanation:
In the distant universe, time [ http://physics.nist…] appears to run slow. Since time-dilated [ http://www.fourmila…] light appears shifted toward the red end of the spectrum [ http://www.lbl.gov/…] (redshifted), astronomers are able to use cosmological time-slowing [ http://itss.raytheo…] to help measure vast distances [ http://antwrp.gsfc.…] in the universe. Above [ http://www.eso.org/…], the light from distant galaxies [ http://antwrp.gsfc.…] has been broken up into its constituent colors (spectra [ http://imagine.gsfc…]), allowing astronomers to measure the redshift [ http://www.astro.vi…] of known spectral lines [ http://imagine.gsfc…]. The novelty of the above image [ http://www.eso.org/…] is that the distance to hundreds of galaxies [ http://antwrp.gsfc.…] can now be measured on a single frame using the Visible MultiObject Spectrograph [ http://www.astrsp-m…] that has begun operating at the Very Large Telescope array [ http://antwrp.gsfc.…] in Chile [ http://www.cia.gov/…]. Analyzing the space distribution of distant objects [ http://antwrp.gsfc.…] will allow insight into when and how stars, galaxies, and quasars [ http://antwrp.gsfc.…] formed, clustered, and evolved [ http://antwrp.gsfc.…] in the early universe [ http://antwrp.gsfc.…].
Credit and Copyright:
VIMOS [ http://www.eso.org/…], VLT [ http://www.eso.org/…], ESO [ http://www.eso.org/]
keyword:
galaxies
keyword:
cosmology
keyword:
spectra
facet_where:
M31
facet_where:
Chile
facet_where:
Virginia
facet_where:
Goddard Space Flight Center (GSFC)
facet_where:
Washington, D.C.
facet_what:
ESO
facet_what:
VLT
facet_what:
Very Large Telescope
original url:
http://antwrp.gsfc.…
UID:
SPD-APOD-ap020319

Breaking Distant Light
Add To Workspace Export