Navigation Links
There's more star-stuff out there but it's not dark matter
Date:5/30/2012

More atomic hydrogen gas the ultimate fuel for stars is lurking in today's Universe than we thought, CSIRO astronomer Dr Robert Braun has found. This is the first accurate measurement of this gas in galaxies close to our own.

Just after the Big Bang the Universe's matter was almost entirely hydrogen atoms. Over time this gas of atoms came together and generated galaxies, stars and planets and the process is still going on. Astronomers want to understand where, when and how the atomic gas is transformed to better understand the Universe in which we live.

By taking a new look at some archival data, Dr Braun, Chief Scientist at CSIRO Astronomy and Space Science in Sydney, Australia, has discovered that galaxies around us are hiding about a third more atomic hydrogen gas than previously calculated.

The study also shows that the gas is distributed very differently from how it was in the past, with much less in the galaxies' outer suburbs than billions of years ago.

"This means that it's much harder for galaxies to pull the gas in and form new stars," Dr Braun said. "It's why stars are forming 20 times more slowly now than in the past."

The new finding doesn't help solve the problem of "Dark Matter" lots of mass, detectable by its gravity, that we haven't yet identified.

"Even though there's more atomic hydrogen than we thought, it's not a big enough percentage to solve the Dark Matter problem. If what we are missing had the weight of a large kangaroo, what we have found would have the weight of a small echidna," Dr Braun said.

Nevertheless, the work will continue to feed into our understanding of how galaxies evolve over time.

Dr Braun based his work on observations made with radio telescopes: CSIRO's Parkes and Australia Telescope Compact Array telescopes in New South Wales (eastern Australia) and other radio telescopes in the USA and the Netherlands. His paper has been published in The '/>"/>

Contact: Helen Sim
helen.sim@csiro.au
61-293-724-251
CSIRO Australia
Source:Eurekalert

Page: 1 2

Related biology news :

1. UGA study finds theres not always safety in numbers when it comes to extinction risk
2. Professor known for work with hunter-gatherers elected to American Academy of Arts and Sciences
3. Are there biosocial origins for antisocial behavior?
4. Gases drawn into smog particles stay there, UCI-led study reveals
5. Best time for a coffee break? Theres an app for that
6. Badwater Basin: Death Valley microbe thrives there
7. Is there a central brain area for hearing melodies and speech cues? Still an open question
8. Feathered friends are far from bird-brained when building nests
9. An all natural diet? Theres no such thing
10. Can we get there from here? Translating stem cell research into therapies
11. Mating rivalry among furred and feathered: Variety is spice of life
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/20/2014)... 20, 2014 /CNW/ -  Issue Serious ... quickly become life threatening for some children.    ... million Canadians have food allergies and this number may be ... children are estimated to have food allergies.  ... irritations and hives to breathing difficulties and loss of consciousness. ...
(Date:8/20/2014)... in this image of the Para and Mato Grosso ... likely intentionally set in order to deforest the land. ... of trees where the land is thereafter converted to ... forestland to farms, ranches, or urban use. The herringbone-patterned ... Amazon Rainforest in the middle of the image are ...
(Date:8/20/2014)... Bay Area Lyme Foundation, which aims to make Lyme ... new research published in an upcoming issue of the ... . The findings show that ticks that carry ... year, making the threat of Lyme disease year-round. The ... Public Health (CDPH) Vector-borne Disease Section and University of ...
Breaking Biology News(10 mins):Information Update - Allergens and food safety at school - What's in your child's lunch? 2Information Update - Allergens and food safety at school - What's in your child's lunch? 3Lyme disease risk is year-round in Northwest California, according to new study 2Lyme disease risk is year-round in Northwest California, according to new study 3
... compounds beginning in early adulthood may delay the onset ... Wake Forest University School of Medicine and other centers ... the Endocrine Society, in San Diego. , Suppression of ... decrease cancer risk in those individuals at high risk ...
... University chemists have employed a computer simulation whose ... transcription process. The study, funded by the National ... issue of the Proceedings of the National Academy ... chromatin--a chromosome's substance consisting of histone proteins and ...
... can create tiny sensors with abilities to detect odors ... Pennsylvania and Monell Chemical Sciences Center. Their findings are ... Letters, a publication of the American Chemical Society. , ... detect molecules on the order of one part per ...
Cached Biology News:Suppressing growth hormone in early adulthood may prevent cancer 2Researchers Create DNA-Based Sensors for Nano-Tongues and Nano-Noses 2
(Date:8/21/2014)... Chester, NJ (PRWEB) August 21, 2014 ... of personal selling optimization technology and services for ... publication of “Grading Pharma’s Use of New Commercial ... of Measurement & Analytics. , The article examines ... marketing yield that are being tested in the ...
(Date:8/20/2014)... Aug. 20, 2014 Clintrax Global, Inc., ... in Raleigh, NC , recently ... as Vice President of Administration. ... all corporate processes, including their alignment with company ... Brad worked as an HR executive, specializing in ...
(Date:8/20/2014)... High performance computing (HPC) will ... complete climate and Earth system model to address ... , Eight national laboratories, including Lawrence Livermore ... for Atmospheric Research, four academic institutions and one ... national laboratories include Argonne, Brookhaven, Lawrence Berkeley, Los ...
(Date:8/20/2014)... 2014 /PRNewswire-iReach/ -- A case study from Intel ... school,s bioengineering department and the Intel® Internet of ... Academic Program, UCSD,s research focuses on exploring the ... Photo - http://photos.prnewswire.com/prnh/20140819/137540 ... of Dr. Todd P. Coleman , Associate ...
Breaking Biology Technology:Pursuit's Peter Robinson Publishes "Grading Pharma's Use of New Commercial Sales Models" 2Clintrax Global, Inc. Announces Addition to Executive Team 2New Project Is the ACME of Addressing Climate Change 2New Project Is the ACME of Addressing Climate Change 3Intel and University of San Diego Bioengineering Department Release Case Study on Health Sciences Research 2
... today announced the,publication of an independent, peer reviewed, ... immune response measured prior to kidney,transplantation using the ... to identify patients that may be at risk ... in the first three,months following transplantation., The ...
... Naval Academy satellite called MidSTAR-1 have proven successful in ... that can check for harmful chemicals and the other ... These technologies were collaboratively developed between NASAs Goddard Space ... Field, Calif.; and Eclipse Energy Systems Inc. of various ...
... Brinks Hofer Gilson & Lione, one of,the largest ... to announce that Meredith Martin Addy has been named ... practice areas by Law & Politics,magazine., Intellectual property ... However, in fourteen years of practice, Ms. Addy is,among ...
Cached Biology Technology:New Independent Research Study Indicates That Cylex's ImmuKnow Test May Identify Kidney Transplant Patients at Risk for Early Acute Rejection 2New Independent Research Study Indicates That Cylex's ImmuKnow Test May Identify Kidney Transplant Patients at Risk for Early Acute Rejection 3NASA MidSTAR-1 successful technologies may be revolutionary 2NASA MidSTAR-1 successful technologies may be revolutionary 3NASA MidSTAR-1 successful technologies may be revolutionary 4Meredith Martin Addy Named One of Top 10 Illinois 'Super Lawyers' for 2008 2
Mouse monoclonal [H4B4] to LAMP2 - Lysosome Marker (Phycoerythrin) ( Abpromise for all tested applications). entrezGeneID: 3920 SwissProtID: P13473...
Mouse monoclonal [IA-C6] to MHC Class II I Ab + Ad (FITC) ( Abpromise for all tested applications). Antigen: Tissue / cell preparation of Purified Mouse lymph node B cells...
...
... Ciphergens ProteinChip System, Series 4000 incorporates the ... researchers and biologists in biomarker research. The ... fastest route for converting biomarker discoveries to ... The Series 4000 is designed to fit ...
Biology Products: