Subscribe free to our newsletters via your
. 24/7 Space News .

'Background' light of universe measured
by Staff Writers
Paris (UPI) Jan 21, 2013

disclaimer: image is for illustration purposes only

The brightness of the background of light photons that has filled the universe since its formation has been measured for the first time, French researchers say.

Scientists at the country's National Center for Scientific Research say their findings could provide new insight into the size of the universe, the formation of stars and the evolution of galaxies.

The light emitted by all the objects in the universe, such as stars and galaxies, ever since its birth fills intergalactic space with an "ocean" of photons known as the "diffuse extragalactic background light," the researchers said.

The shine of our own galaxy makes it impossible to directly measure this fossil record of the light emitted in the universe, so astrophysicists made use of gamma rays, with energy more than 500 billion times greater than that of visible light, as an alternative, indirect method of measuring this light, a release from the center said.

These measurements made it possible to estimate for the first time the intensity of the starlight contained within all the universe at wavelengths ranging from the near infrared to the ultraviolet, including visible wavelengths, it said.

A better understanding of this diffuse light should yield information about the first stars, shedding light on their formation and on the evolution of galaxies, astronomers said.


Related Links
Understanding Time and Space

Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks DiggDigg RedditReddit GoogleGoogle

Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

The farthest supernova yet for measuring cosmic history
Berkeley CA (SPX) Jan 11, 2013
What if you had a "Wayback Television Set" and could watch an entire month of ancient prehistory unfold before your eyes in real time? David Rubin of the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) presented just such a scenario to the American Astronomical Society (AAS) meeting in Long Beach, CA, when he announced the discovery of a striking astronomical obj ... read more

US, Europe team up for moon fly-by

Russia to Launch Lunar Mission in 2015

US, Europe team up for moon fly-by

Mission would drag asteroid to the moon

NASA's Veteran Mars Rover Ready to Start 10th Year

Opportunity Investigating Light-toned Veins in Rock Outcrop

Reull Vallis: a river ran through it

US scientists find evidence of ancient Martian lake

TDRS-K Offers Upgrade to Vital Communications Net

An Astronaut's Guide

Mathematical breakthrough sets out rules for more effective teleportation

Orion Teamwork Pays Off

Reshuffle for Tiangong

China to launch 20 spacecrafts in 2013

Mr Xi in Space

China plans manned space launch in 2013: state media

NASA to Send Inflatable Pod to International Space Station

ISS to get inflatable module

ESA workhorse to power NASA's Orion spacecraft

Competition Hopes To Fine Tune ISS Solar Array Shadowing

NASA Selects Experimental Commercial Suborbital Flight Payloads

Payload elements come together in Starsem's wrap-up Soyuz mission from Baikonur Cosmodrome for Globalstar

Amazonas 3 in Kourou for Ariane 5 year-opening launch campaign

Suborbital Space Research and Education Conference Scheduled for June 2013

New Evidence Indicates Auroras Occur Outside Our Solar System

Glitch has space telescope shut down

Earth-size planets common in galaxy

NASA's Hubble Reveals Rogue Planetary Orbit For Fomalhaut B

Researchers move Barkhausen Effect forward

Computer breakthrough: Code of life becomes databank

Kim Dotcom apologises for Mega bugs

World's Most Complex 2D Laser Beamsteering Array Demonstrated

The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement