Date: November 18, 2014

The Surprising Differences in How Space Travel Affects Men and Women

November 18, 2014 / / 0 Comments







Excerpt from
popularmechanics.com 

Both men and women have the right stuff to succeed as astronauts—that much is for sure. But an exhaustive NASA study has found physiological differences in how space affects each gender, with some cases benefitting women over men and some cases vice versa.

For instance, women are less vulnerable to the effects of interstellar radiation, but more vulnerable to space sickness or urinary tract infections in space. Men have fewer problems with orthostatic intolerance (problems standing up after extended exposures to microgravity), but develop more vision problems and kidney stones.

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New Geologic Map Shows the Beauty of the Asteroid Vesta

November 18, 2014 / / 0 Comments


This new map of the asteroid Vesta, which uses a Mollweide projection, reveals the asteroid's geological history.
This new map of Vesta, which uses a Mollweide projection, reveals the asteroid’s geological history. NASA/JPL-Caltech/Arizona State University



Excerpt from 
wired.com


For 15 months between 2011 and 2012, the Dawn spacecraft orbited the asteroid called Vesta, snapping high-resolution pictures of the cratered, potato-shaped rock. Scientists then spent another two and a half years poring over the images and piecing together the geology written on Vesta’s surface. Now, a team led by planetary scientist David Williams of Arizona State University has compiled that information together into this beautiful map, which they’ve published online for the December issue of the journal Icarus.

Vesta was forged within the cloud of dust and debris that formed the solar system about 4.5 billion years ago. During its lifetime, Vesta was pelted with smaller asteroids and rocks, which left a multitude of craters. But according to the researchers, there were three impacts in particular that shaped Vesta’s geological history. The most recent collision happened sometime between 120 million and 390 million years ago, forming the Marcia crater seen near the center of the map.

Two earlier impacts struck Vesta’s south pole more than one billion years ago between 200 million and one billion years apart, making the Veneneia and Rheasilvia craters, which are each about 300 miles in diameter. These collisions were so big that they reshaped the asteroid, leading to its elongated shape today, Williams says. 

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Comet landing: Organic extraterrestrial molecules detected by Philae lander

November 18, 2014 / / 0 Comments

The Philae lander has detected organic molecules on the surface of its comet, scientists have confirmed.Excerpt from bbc.com By Paul Rincon Science editor, BBC News website Carbon-containing "organics" are the basis of life on Earth and may ...

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Experiencing a Shift in Collective Consciousness

November 18, 2014 / / 0 Comments

Video - Many believe that a shift in human consciousness was the true message of the Mayan Long Count Calendar. Do you think a shift is happening? [...]

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We Rediscover Together The Power Of True Love

November 18, 2014 / / 0 Comments

We Rediscover Together The Power Of True Lovewww.themasterteacher.tv

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Leonids meteor shower peak begins at midnight

November 18, 2014 / / 0 Comments



Excert from koin.com
PORTLAND, Ore. (KOIN 6) 

It’s that time of year again, folks. Time for the Leonids meteor shower, that is.

Peak meteor-viewing time will be from midnight to dawn Nov. 17 and Nov. 18.
As the earth’s path crosses orbits with the comet Tempel-Tuttle, its orbit becomes littered with debris, earthsky.org reports. When this debris comes into earth’s atmospshere, it vaporizes, giving us a glimpse at the, meteor shower.

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Comet lander: Camera sees Philae’s hairy landing

November 18, 2014 / / 0 Comments

This collection of images was acquired when Rosetta was about 15km above the surface of 67P  Excerpt from bbc.com By Jonathan Amos Science correspondent, BBC NewsHigh-resolution pictures have now been released of the Philae pr...

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Scientists ‘confident’ comet lander will wake up

November 18, 2014 / / 0 Comments

ASSOCIATED PRESSA burst of sunshine in the spring could be just the wake-up call for Europe's comet lander.Scientists raised hopes Monday that as the Philae lander nears the sun its solar panel-powered battery will recharge, and the first spacecraft ...

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Elusive dark matter may be detected with GPS satellites

November 18, 2014 / / 0 Comments


This two-clocks-illustration shows the pattern of how two atomic clocks would desynchronize and then resynchronize due to a lump of dark matter sweeping through a Global Positioning System or other atomic clock based network. Photo courtesy of Andrei Derevianko, University of Nevada, Reno.


Excerpt from
sciencerecorder.com


Global Positioning System, or GPS for short, devices are typically used for navigation purposes. But this satellite network could also alert us to something else: the presence of dark matter.

Dark matter is thought to form 80% of the universe, but is difficult to detect because it rarely interacts with ordinary matter. Its makeup is unknown, as it has never been viewed by science. Some have suggested that dark matter is a particle; however, a new study indicates that dark matter may consist of kinks in the quantum field.

According to Andrei Derevianko at the University of Nevada, Reno, and Maxim Pospelov at the Perimeter Institute in Waterloo, Ontario, Canada, dark matter may be made of quantum field cracks that can be detected by GPS. The theory is a revolutionary one, and would change the nature of time and space where the kinds are located.

One of these elements is time, which is tracked by the extremely accurate GPS system. With a network of satellites spanning 50,000 kilometers and traveling through space at 300 kilometers a second, a cosmic kink could disturb the GPS clocks. This quantum crack would require 170 seconds to jump across the networks.

GPS clocks could be interrupted by other factors, but Deverianko and Pospelov believe that only dark matter could disturb the system’s timekeeping in a certain way.

Derevianko is currently pulling data from 15 years of GPS records to search for signs of dark matter’s presence. If no fingerprints are detected, he will use the ground-based atomic clocks belonging to the Network for European Accurate Time and Frequency Transfer.
If dark matter is nothing more than cosmic kinks, it could give some people a new thing to grumble about. “I hear these stories about people getting lost using GPS,” said Derevianko. “Now they could have another excuse: maybe it was dark matter that caused them to lose their way.”

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