This article was posted by CrystalWind.ca

A+ A A-

Astrophysicists draw most comprehensive map of the universe

hudson_universe_map

Astrophysicists have created a 3D map of the universe that spans nearly two billion light years and is the most complete picture of our cosmic neighbourhood to date.

The spherical map of galaxy superclusters will lead to a greater understanding of how matter is distributed in the universe and provide key insights into dark matter, one of physics’ greatest mysteries.

Professor Mike Hudson, Jonathan Carrick and Stephen Turnbull, of the Department of Physics and Astronomy at the University of Waterloo, and Guilhem Lavaux the Institute d’Astrophysique de Paris of the Centre national de la recherche scientifique of France, created the map. Professor Hudson is also an affiliate member of the Perimeter Institute for Theoretical Physics.

“The galaxy distribution isn’t uniform and has no pattern. It has peaks and valleys much like a mountain range. This is what we expect if the large-scale structure originates from quantum fluctuations in the early universe,” said Hudson, also associate dean of science, computing.

The map appears online in the peer-review journal, Monthly Notices of the Royal Astronomical Society, one of the world’s leading primary research journals for astronomy and astrophysics.

A slice through the 3D map of the nearby universe. Our Milky Way galaxy is in the centre, marked by a cross.  The map spans nearly two billion light years from side to side. Regions with many galaxies are shown in white or red, whereas regions with fewer galaxies are dark blue. 

The lighter blue and white areas on the map represent greater concentrations of galaxies. The red area is the supercluster called the Shapley Concentration, the largest collection of galaxies in the nearby universe. Unexplored areas appear in medium blue.

Knowing the location and motion of matter in the universe will help astrophysicists predict the universe’s expansion and identify where and how much dark matter exists.

Scientists have observed that galaxies move differently because the universe's expansion is not even. These differences are called peculiar velocities. Our own Milky Way galaxy and its neighbour Andromeda are moving with a speed of 2 million kilometres per hour.

Previous models haven’t fully accounted for this observed motion. Hudson and his team are interested in discovering what structures are responsible for the peculiar velocities.

These deviations in the motion of galaxies are a valuable tool to determine the distribution of matter and dark matter on the largest scales.

Dark matter accounts for a large majority of the mass content in the universe. It is a hypothesized form of matter particle that does not reflect or emit light and as a result it can’t be seen or measured directly. The existence and properties of dark matter can only be inferred indirectly through its gravitational effects on visible matter and light.

“A better understanding of dark matter is central to understanding the formation of galaxies and the structures they live in, such as galaxy clusters, superclusters and voids,” said Hudson.

The next step will involve getting more detailed samples of peculiar velocities to enhance the map, in collaboration with researchers in Australia.


Credit: waterloo.ca

Monday, April 27, 2015

About the University of Waterloo

In just half a century, the University of Waterloo, located at the heart of Canada's technology hub, has become one of Canada's leading comprehensive universities with 35,000 full- and part-time students in undergraduate and graduate programs. A globally focused institution, celebrated as Canada’s most innovative university for 23 consecutive years, Waterloo is home to the world's largest post-secondary co-operative education program and encourages enterprising partnerships in learning, research and discovery. In the next decade, the university is committed to building a better future for Canada and the world by championing innovation and collaboration to create solutions relevant to the needs of today and tomorrow. For more information about Waterloo, please visit uwaterloo.ca.

 


CrystalWind.ca is free to access and use.
Please support us with a small gift of $11.11 or $22.22 or $33.33. 

or
Please buy us a coffee!
Thank you!
ॐ Namasté - Blessings!
"Life is an echo, what you send out comes back."
© 2008-2021 crystalwind.ca. All rights reserved.
Pin It

Featured Writers

Free Reading Here!!

crystal-wind-oracle-mobile-app
 
Cut Through The Illusions!
Available On The
Apple  / Android / Amazon
NEW Expanded Version - 53 cards!

Articles: AndEl: Technology

Who is Online Now

We have 1512 guests and no members online

Featured This Month

Page:

Litha - The Midsummer Solstice

Litha - The Midsummer Solstice

The Litha festival is one of the lesser Sabbats of the Witches annual calend... Read more

Celestite

Celestite

The Divine Listener Stone Celestite has remarkable relaxing and uplifting a... Read more

Birth Totem - Deer

Birth Totem - Deer

Birth dates: May 21 - June 20 Birth Totem is: Deer Clan of: Butterfly (Air... Read more

Gemini

Gemini

GEMINI May 21 - June 20 Spirit: To investigate Objectives: To advance by ... Read more

Deer Medicine

Deer Medicine

Deer is not only a medicine someone can carry, it is a Native American birth... Read more

Yarrow

Yarrow

Helps you create the future of your dreams Gender: Feminine Planet: Venus ... Read more

A Simple Summer Solstice Ritual with Crystal…

A Simple Summer Solstice Ritual with Crystals

June 20, 2016 is this year’s summer solstice, marking&n... Read more

Crystal Gem: Grids and Gridding

Crystal Gem: Grids and Gridding

What are Crystal Gem Grids? They are tools for empowerment, for blessings, ... Read more

Cornplanting Moon

Cornplanting Moon

Deer – Moss Agate – Yarrow – Green and White May 21 to June 20 The Cornpla... Read more

Sun in Gemini

Sun in Gemini

Sun in Gemini May 22 through June 21 An Overview of Sun Sign Characteristic... Read more

Citrine

Citrine

The Clearing Stone Citrine’s wide range of colours enables it to help balan... Read more

Rutilated Quartz

Rutilated Quartz

The Energy Buster Stone Rutilated Quartz is an illuminator for the soul, pr... Read more

The Hawthorn Tree - May 13 - June 9

The Hawthorn Tree - May 13 - June 9

Celtic Symbol : The Chalice Zodiac Degrees : 21º00` Taurus - 17º59 Gemini ... Read more

Gemini Mythology

Gemini Mythology

The Story Behind the Gemini Zodiac Sign The origins of some constellation m... Read more

Litha Sabbat - The Summer Solstice

Litha Sabbat - The Summer Solstice

Gardens are blooming, and summer is in full swing. Fire up the barbeque, turn ... Read more

© 2008-2021 CrystalWind.ca. Site Creation by CreativeInceptions.com.
X

Right Click

No right click