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Gizmorama

June 16, 2010
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OH Yeah...Well, Take THAT Martha Stewart
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Good Morning,

For details on a study that suggests that one-third of Mars
was covered with water a few billion years ago, check out
the first article. In the study, analyses of large amounts
of river valleys & deltas and the planet?s hydrosphere have
been combined.

Until Next Time,
Erin

Questions? Comments? Email me at: mailto:gizmo@gophercentral.com
Email your comments=

P.S. You can discuss this issue or any other topic in the new
Gizmorama forum. Check it out here...
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Ancient ocean may have covered 1/3 of Mars

BOULDER, Colo. - A NASA-funded study suggests a vast ocean
likely covered one-third of the surface of Mars about 3.5
billion years ago. University of Colorado at Boulder scien-
tists said their study is the first to combine an analysis
of water-related features, including scores of delta depo-
sits and thousands of river valleys, to test for the occur-
rence of an ocean sustained by a global hydrosphere on
early Mars. The researchers said their study provides
further support for the theory of a sustained sea on the
Red Planet during the Noachian era more than 3 billion
years ago. The study was led by Assistant Professor Brian
Hynek and researcher Gaetano Di Achille, both affiliated
with the university's Laboratory for Atmospheric and Space
Physics. They said more than half of the 52 river delta
deposits they and their team identified in the new study --
each of which was fed by numerous river valleys -- likely
marked the boundaries of the proposed ocean, since all were
at about the same elevation. Twenty-nine of the 52 deltas
were connected either to the ancient Mars ocean or to the
groundwater table of the ocean and to several large, adjacent
lakes, Di Achille said. The research is reported in the
journal Nature Geoscience.

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Japan asteroid spacecraft returns to Earth

TOKYO - An unmanned Japanese spacecraft Sunday completed an
unprecedented seven-year journey to the surface of an aster-
oid and back to Earth, officials said. The Japanese news
service Kyodo reported the Japan Aerospace Exploration Agency
said the space probe Hayabusa burned out before reaching the
ground, but a heat-resistant capsule, possibly holding sand
from the asteroid Itokawa, landed in the Australian desert
near Woomera after separating from the probe shortly after
8 p.m. local time. Hayabusa, or falcon in English, launched
in 2003, traveled about 4 billion miles on its trip from
Earth to the asteroid and back, circling the sun five times.
Beset by technical problems, it completed its unprecedented
trip three years behind scheduled, Kyodo said. Kyodo said
scientists could recover the 15.75-inch-diameter capsule as
early as Monday. Researchers are hoping any materials re-
turned from the asteroid might provide insight into the ori-
gin and evolution of the solar system, the news agency said.
The only substances brought back to Earth from an astronom-
ical body are rocks from the moon.


U.S. accelerating move to cloud computing

GAITHERSBURG, Md. - The U.S. National Institute of Standards
and Technology says it's been asked to help accelerate the
federal government's move to cloud computing. Cloud computing
is an Internet-based computing system that provides shared
software and information to computers and other devices in
an on-demand fashion, like the electricity grid, according
to Wikipedia. U.S. Chief Information Officer Vivek Kundra,
who requested NIST assistance, said he views the new tech-
nology as a means of lowering the cost of government oper-
ations, driving innovation and fundamentally changing the way
government delivers technology services across the board.
NIST said it's focused on two major cloud computing efforts
-- one of which is a collaborative technical initiative known
as the Standards Acceleration to Jumpstart Adoption of Cloud
Computing. That program is intended to validate and communi-
cate interim cloud computing specifications before they be-
come formal standards. Another major challenge with cloud
computing is to safeguard government data in clouds, especi-
ally citizens' private information. Agencies using cloud
computing will still use NIST-developed Federal Information
Security Management Act guidelines. More information is
available at:
http://csrc.nist.gov/groups/SNS/cloud-computing.

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Nanotech yields cooling advances

CORVALLIS, Ore. - U.S. scientists say they have created nano-
structure coatings to make heat transfer more efficient and
possibly revolutionize the nation's cooling industry. Re-
searchers at Oregon State University and the Pacific North-
west National Laboratory said the nanotech coatings can
remove heat four times faster than the same materials before
they are coated, using inexpensive materials and application
procedures. "For the configurations we investigated, this
approach achieves heat transfer approaching theoretical max-
imums," said Terry Hendricks, the project leader from the
Pacific Northwest National Laboratory. "This is quite sig-
nificant." The scientists said the improvement in heat trans-
fer they achieved by modifying surfaces at the nanoscale has
possible applications in both micro- and macro-scale indus-
trial systems. They said their coatings produced a heat
transfer coefficient 10 times higher than uncoated surfaces.
Heat exchange is a significant issue in many mechanical
devices. For example, the radiator and circulating water in
an automobile engine exist to address that problem. And heat
exchangers are what make modern air conditioners or refriger-
ators function. "Many electronic devices need to remove a
lot of heat quickly, and that's always been difficult to do,"
said Associate Professor Chih-hung Chang. "This combination
of a nanostructure on top of a microstructure has the poten-
tial for heat transfer that's much more efficient than any-
thing we've had before." The research is reported in the
International Journal of Heat and Mass Transfer.

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