Featured Research

from universities, journals, and other organizations

Galaxy Formation Not Random, Says Astronomer

Date:
February 28, 2001
Source:
University Of Toronto
Summary:
Gaze into the vastness of the universe this evening and in all likelihood those galaxies look just as they did five billion years ago, and they didn't get to their locations by random chance, says U of T astronomy professor Raymond Carlberg.

Feb. 22, 2001 -- Gaze into the vastness of the universe this evening and in all likelihood those galaxies look just as they did five billion years ago, and they didn't get to their locations by random chance, says U of T astronomy professor Raymond Carlberg.

In the earliest moments after the big bang, waves were created in the universe, Carlberg explains. When a wave became large enough, it eventually collapsed under its own gravity to create what is called a dark halo. The gravitational force of the dark halo sucked in and compressed the gas particles around it, and it is in this environment that galaxies are bred, running contrary to the notion that galaxies - and their resulting stars and planets - form randomly in the universe.

By measuring clusters of galaxies from the present time back to when the universe was about five billion years younger, Carlberg and his team of researchers found that these clusters experienced little, if any, change. Once the drama of the initial burst of star formation is over, galaxies settle into peaceful and essentially stable clusters. This runs counter to some prevailing theories that suggest galaxy clusters are prone to rapid change.

"We now know that the clustering of galaxies did not happen at random and changed little over the past five billion years. Cosmologists now need to use new telescopes to go into even earlier times to see the dark halos just as they are collapsing and beginning to draw together the gas that creates a young galaxy."

Carlberg's findings will be published in The Astrophysical Journal.


Story Source:

The above story is based on materials provided by University Of Toronto. Note: Materials may be edited for content and length.


Cite This Page:

University Of Toronto. "Galaxy Formation Not Random, Says Astronomer." ScienceDaily. ScienceDaily, 28 February 2001. <www.sciencedaily.com/releases/2001/02/010226070416.htm>.
University Of Toronto. (2001, February 28). Galaxy Formation Not Random, Says Astronomer. ScienceDaily. Retrieved September 3, 2014 from www.sciencedaily.com/releases/2001/02/010226070416.htm
University Of Toronto. "Galaxy Formation Not Random, Says Astronomer." ScienceDaily. www.sciencedaily.com/releases/2001/02/010226070416.htm (accessed September 3, 2014).

Share This



More Space & Time News

Wednesday, September 3, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: NASA Captures Solar Flare

Raw: NASA Captures Solar Flare

AP (Sep. 1, 2014) NASA reported the sun emitted a mid-level solar flare, on August 24th. NASA's Solar Dynamics Observatory captured the images of the flare, which erupted on the left side of the sun. (Sept. 1) Video provided by AP
Powered by NewsLook.com
Space Shuttle Discovery's Legacy, 30 Years Later

Space Shuttle Discovery's Legacy, 30 Years Later

Newsy (Aug. 30, 2014) The space shuttle Discovery launched for the very first time 30 years ago. Here's a look back at its legacy. Video provided by Newsy
Powered by NewsLook.com
Experiment Tests Whether Universe Is Actually A Hologram

Experiment Tests Whether Universe Is Actually A Hologram

Newsy (Aug. 27, 2014) Researchers at Fermilab are using a device called "The Holometer" to test whether our universe is actually a 2-D hologram that just seems 3-D. Video provided by Newsy
Powered by NewsLook.com
SpaceX’s Falcon 9 Rocket Explodes After Liftoff

SpaceX’s Falcon 9 Rocket Explodes After Liftoff

Newsy (Aug. 23, 2014) The private spaceflight company says it is preparing a thorough investigation into Friday's mishap. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins