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Science's breakthrough of the year: Illumination of the dark, expandinguniverse (Forwarded)



 
 
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Old December 20th 03, 05:22 AM
Andrew Yee
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Default Science's breakthrough of the year: Illumination of the dark, expandinguniverse (Forwarded)

American Association for the Advancement of Science
Washington, D.C.

Contact:
Christina Smith, , 202-326-7088

December 18, 2003

Science's breakthrough of the year: Illumination of the dark, expanding universe

Science honors the top ten research advances of 2003

In 2003, new evidence cemented the bizarre idea that the universe is made mostly
of mysterious "dark matter," being stretched apart by an unknown force called
"dark energy." This set of discoveries claims top honors as the Breakthrough of
the Year, named by Science and its publisher, AAAS, the nonprofit science society.

These insights into our "dark" universe plus nine other research advances make
up Science's top ten scientific developments in 2003, chosen for their profound
implications for society and the advancement of science. The Top Ten list
appears in the journal's 19 December issue.

This year, information from the Wilkinson Microwave Anisotropy Probe (WMAP)
satellite and the Sloan Digital Sky Survey (SDSS) telescopes confirmed some of
cosmologists' strangest proposals about the fate of the universe.

"The implications of these discoveries about the universe are truly stunning.
Cosmologists have been trying for years to confirm the hypothesis of a dark
universe. Science is glad to recognize their success in this effort as the
Breakthrough of the Year for 2003," said Don Kennedy, Editor-in-Chief of Science.

Those proposals entered the spotlight five years earlier, when Science's 1998
Breakthrough of the Year honored the discovery that the universe was expanding.
Such an expansion would likely be driven by a "dark energy" that counters the
effects of gravity. At the time, however, many cosmologists were wary of this
strange idea.

Their doubts were dispelled in 2003. WMAP took the most detailed picture ever of
the cosmic microwave background -- the light emitted by the universe during the
first instant of its existence. By analyzing patterns in this light, researchers
concluded that the universe is only 4 percent ordinary matter. Twenty-three
percent is dark matter, which astrophysicists believe is made up of a currently
unknown particle. The remainder, 73 percent, is dark energy.

WMAP also nailed down other basic properties of the universe, including its age
(13.7 billion years old), expansion rate and density.

The SDSS, an effort to map out a million galaxies, also made major contribution
to our understanding of the universe this year. By analyzing how galaxies are
spread out through space, the researchers can see if the galaxies are being
pulled apart by dark energy or pushed together by gravity.

In October, the SDSS team reported its analysis of the first quarter-million
galaxies. Its conclusion was the same as WMAP's: the universe is dominated by
dark energy.

Science also salutes nine other scientific achievements of 2003. Except for the
first runner up, the others are in no particular order.

Cracking Mental Illness: Researchers identified particular genes that reliably
increase one's risk of inherited disorders, such as schizophrenia, depression
and bipolar disorder. Scientists are now working to understand how these genes
can distort the brain's information processing and prod someone into mental
illness. Researchers hope to understand brain biases underlying mental illnesses
well enough to design drugs to repair them.

Climate Change Impacts: Global warming was no longer an abstract concept in
2003. Scientists reported melting ice, droughts, decreased plant productivity,
and altered plant and animal behavior.

RNA Advances: In 2003, Scientists explored how small RNAs, Science's
breakthrough of 2002, impact a cell's behavior, from early development to gene
expression. Harnessing the power of "small interfering RNAs" may help
researchers combat diseases such as HIV and hepatitis by controlling specific
protein production.

Zooming in on Single Molecules: New collaborations between biologists and
physicists captured the activities of individual molecules inside cells.
Research this year offered a look at molecular motors, colored nanocrystal tags
attached to cell receptors and a single enzyme digesting DNA.

Starbursts and Gamma Rays: Scientists improved our understanding of the most
energetic explosions in the universe: tremendous blasts of energy called gamma
ray bursts. Astronomers confirmed the connection between gamma ray bursts and
supernovas -- explosions of massive stars -- when they spotted the unmistakable
fingerprint of a supernova in the glow of a bright gamma ray burst. NASA's Swift
satellite set for launch in mid-2004 should catch gamma ray bursts at five times
the rate of any previous mission.

Spontaneous Sperm and Egg Cells: The surprising discovery that mouse embryonic
stem cells can develop into both sperm and eggs may help scientists learn how
these sex cells develop and why some kinds of infertility arise. The possibility
that human embryonic stem cells might someday become a source for human eggs
also raised serious ethical questions.

Left-Handed Materials: After two years of debate, several research teams
confirmed that certain high-tech materials can bend light and other
electromagnetic radiation in the "wrong" direction. Scientists used this new
class of materials to produce an inverse Doppler Effect and are also working to
craft better lenses.

The Self-Reliant Y Chromosome: In 2003, the genetic sequence of the human male Y
chromosome revealed why this loner chromosome doesn't need a partner. It has
duplicate genes, arranged as mirror-image "palindromes." Thus, when mutations
arise and a new gene copy is needed, a twin copy is on-hand.

Breakthrough Cancer Therapies?: In June of 2003, researchers announced that an
antiangiogenesis drug, given with conventional chemotherapy drugs in a large
clinical trial, prolonged the lives of patients with advanced colon cancer.
Antiangiogenesis drugs starve tumors by preventing blood vessel growth. With
around 60 different antiangiogenesis drugs currently in clinical trials against
a wide variety of cancers, researchers and patients now appear poised to reap
the benefits of angiogenesis research.

Special SARS Section: Severe acute respiratory syndrome (SARS) clamored onto the
world stage in March 2003 after first appearing in November 2002. SARS served as
a reminder that new infectious diseases can emerge at any time -- and that they
don't have to sicken a lot of people to choke national economies. Thanks to
worldwide collaboration, scientists definitively nailed the agent, a member of
the coronavirus family, only five weeks after the World Health Organization
sounded a global alarm. In the end, low-tech public health measures, such as
strict isolation of patients, eventually cornered the virus after more than
8,400 reported cases and more than 916 deaths.

Science's Breakdown of the Year emerged on 1 February 2003, when the space
shuttle Columbia disintegrated as it re-entered the atmosphere after a science
mission. The tragedy left seven dead, the shuttle fleet grounded and NASA's
future in question. Much of 2004 could be dedicated to a reexamination of NASA's
civil space program.

Where Researchers Might Soar in 2004: As in previous years, Science highlighted
areas to watch in 2004. This year, their choices include three planned Mars
landings, microbiology and genomics for biodefense, more insights into the human
genome, open access scientific journals, soils' impact on climate change and
sustainable agriculture, the debate over the costs and benefits of tighter
security and anti-terror measures in the realm of science, and studies of the
heavy "bottom" quark.

Founded in 1848, AAAS has worked to advance science for human well-being through
its projects, programs, and publications, in the areas of science policy,
science education and international scientific cooperation. AAAS and its
journal, Science, report nearly 140,000 individual and institutional
subscribers, plus 272 affiliated organizations in more than 130 countries,
serving a total of 10 million individuals. Thus, AAAS is the world's largest
general federation of scientists. Science is an editorially independent,
multidisciplinary, peer-reviewed weekly that ranks among the world's most
prestigious scientific journals. AAAS administers EurekAlert!
(
http://www.eurekalert.org), the online news service, featuring the latest
discoveries in science and technology.

  #2  
Old December 20th 03, 12:45 PM
Aladar
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Posts: n/a
Default Science's breakthrough of the year: Illumination of the dark, expanding universe (Forwarded)

Andrew Yee wrote in message m...
American Association for the Advancement of Science
Washington, D.C.

Contact:
Christina Smith, , 202-326-7088

December 18, 2003

Science's breakthrough of the year: Illumination of the dark, expanding universe

Science honors the top ten research advances of 2003

In 2003, new evidence cemented the bizarre idea that the universe is made mostly
of mysterious "dark matter," being stretched apart by an unknown force called
"dark energy." This set of discoveries claims top honors as the Breakthrough of
the Year, named by Science and its publisher, AAAS, the nonprofit science society.


It is a shame! Both the "dark matter" and "dark energy" are nonsenses,
they have no place near the sciences!

[...]
Climate Change Impacts: Global warming was no longer an abstract concept in
2003. Scientists reported melting ice, droughts, decreased plant productivity,
and altered plant and animal behavior.


That is indeed a breakthrough: the same scientists allow to get
here... and still no solution, how to correct the problem...

[...]

Starbursts and Gamma Rays: Scientists improved our understanding of the most
energetic explosions in the universe: tremendous blasts of energy called gamma
ray bursts. Astronomers confirmed the connection between gamma ray bursts and
supernovas -- explosions of massive stars -- when they spotted the unmistakable
fingerprint of a supernova in the glow of a bright gamma ray burst.


Check please: I posted the Daisy-petal graph on my site in 1999,
indicating this connection...

[...]
and studies of the
heavy "bottom" quark.


And that's a lady... Fat bottom lady...

Cheers!
Aladar
http://www.stolmarphysics.com
 




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