Archive for the ‘News’ Category

Deep water discovered towards Earth’s core

“This water is much deeper than ever found before, at a third of the way to the edge of Earth’s core”

“If it wasn’t down there, we would all be submerged,” says Steve Jacobsen at Northwestern University in Evanston, Illinois. Northwestern geophysicist Steve Jacobsen and his team made the discovery. “This implies a bigger reservoir of water on the planet than previously thought.” Scientists have found deep pockets of magma located about 400 miles beneath North America, a likely signature of the presence of water at these depths. It looks like water from the Earth’s surface can be driven to such great depths by plate tectonics, eventually causing partial melting of the rocks found deep in the mantle.

“Geological processes on the Earth’s surface, such as earthquakes or erupting volcanoes, are an expression of what is going on inside the Earth, out of our sight,” said Jacobsen. “I think we are finally seeing evidence for a whole-Earth water cycle, which may help explain the vast amount of liquid water on the surface of our habitable planet. Scientists have been looking for this missing deep water for decades.”

Read additionally “How we know what lies at Eath’s core” at BBC.

Get Mars in 3 days

NASA researchers are working on a laser propulsion system that could get to Mars in 3 days Sciencealert reports. NASA scientist Philip Lubin is working on a system allowing to get the Red Planet in as little as three days. “There are recent advances that take this from science fiction to science reality,” Lubin explains. “There is no known reason why we can not do this.”

“Electromagnetic acceleration is only limited by the speed of light while chemical systems are limited to the energy of chemical processes,” writes Lubin in a paper on the technology.

What scientists just discovered in Greenland

A new study finds that climate change may affect the Greenland ice sheet more seriously than scientists could imagine.

The new study , published Monday in the journal Nature Climate Change, focuses on a part of the ice sheet known as “firn” – a porous layer of built-up snow that slowly freezes into ice over time. It’s considered an important part of the ice sheet because of its ability to trap and store excess water before it’s able to run off the surface of the glacier, an essential service that helps mitigate the sea-level rise that would otherwise be caused by the runoff water.

“As this layer is porous and the pores are connected, theoretically all the pore space in this firn layer can be used to store meltwater percolating into the firn whenever melt occurs at the surface,” said the new paper’s lead author, Horst Machguth of the Geological Survey of Denmark and Greenland , in an email to The Washington Post. Over time, the percolating meltwater trickles down through the firn and refreezes.

Washington Post

Sun-like star discovered

Astronomers at the Leiden Observatory, The Netherlands, and the University of Rochester, USA, have discovered that the ring system that they see eclipse the very young Sun-like star J1407 is of enormous proportions, much larger and heavier than the ring system of Saturn, Astronomy.com reports. The ring system — the first of its kind to be found outside our Solar System — was discovered in 2012 by a team led by Rochester’s Eric Mamajek.

“The details that we see in the light curve are incredible. The eclipse lasted for several weeks, but you see rapid changes on time scales of tens of minutes as a result of fine structures in the rings,” says Kenworthy. “The star is much too far away to observe the rings directly, but we could make a detailed model based on the rapid brightness variations in the starlight passing through the ring system. If we could replace Saturn’s rings with the rings around J1407b, they would be easily visible at night and be many times larger than the full Moon.”

“This planet is much larger than Jupiter or Saturn, and its ring system is roughly 200 times larger than Saturn’s rings are today,” said co-author Mamajek, professor of physics and astronomy at the University of Rochester. “You could think of it as kind of a super Saturn.”

The researchers encourage amateur astronomers to help monitor J1407, which would help detect the next eclipse of the rings, and constrain the period and mass of the ringed companion. Observations of J1407 can be reported to the American Association of Variable Star Observers (AAVSO). In the meantime the astronomers are searching other photometric surveys looking for eclipses by yet undiscovered ring systems.

Philippines’ volcano started up

It is reporting that yesterday the most active Philippines’ volcano Mayon, 2,640-metre (8,070-foot) Mayon, located about 330 kilometres (200 miles) southwest of Manila, had been awoke and lava cascaded from the hill. The volcano’s world-renowned perfect cone appeared to have been deformed, swollen with lava that had risen from the Earth’s core.

Soldiers went from house to house asking residents to evacuate, after authorities on Monday raised the third highest alert in a five-step scale, meaning a full-scale eruption is possible “within weeks”. At least 8,000 of the target 50,000 people had been moved to temporary shelters, with the operation expected to run for three days, regional civil defence director Bernardo Alejandro told AFP.

The World of the Matrix begins

The super-sensation is the artificial womb exists. In Tokyo, researchers have developed a technique called EUFI — extrauterine fetal incubation. They have taken goat fetuses, threaded catheters through the large vessels in the umbilical cord and supplied the fetuses with oxygenated blood while suspending them in incubators that contain artificial amniotic fluid heated to body temperature.

Doctors are developing artificial wombs in which embryos can grow outside a woman’s body. The work has been hailed as a breakthrough in treating the childless.

Scientists have created prototypes made out of cells extracted from women’s bodies. Embryos successfully attached themselves to the walls of these laboratory wombs and began to grow. However, experiments had to be terminated after a few days to comply with in-vitro fertilisation (IVF) regulations.

Yoshinori Kuwabara, chairman of the Department of Obstetrics and Gynecology at Juntendo University in Tokyo, has been working on artificial placentas for a decade. His interest grew out of his clinical experience with premature infants, and as he writes in a recent abstract, ”It goes without saying that the ideal situation for the immature fetus is growth within the normal environment of the maternal organism.”

Kuwabara and his associates have kept the goat fetuses in this environment for as long as three weeks. But the doctor’s team ran into problems with circulatory failure, along with many other technical difficulties. Pressed to speculate on the future, Kuwabara cautiously predicts that ”it should be possible to extend the length” and, ultimately, ”this can be applied to human beings.”

Read more We don’t need women either

First pilotless F-16

The US air force has test flown an F-16 fighter jet without a pilot on board for the first time in the latest sign of the military’s increasing reliance on drones.

The robotic F-16 flew for 55 minutes with an empty cockpit from a Florida base last week as part of a programme that would see the converted fighter jet used as a target for pilots in training, manufacturer Boeing said.

“It was really amazing to see an F-16 take off with nobody in it,” said Michelle Shelhamer from Boeing, which has adapted the plane for the US military.

The aircraft is one of six “retired” F-16 jets that would be used as aerial targets for fighter pilots training for air-to-air combat, she said.

“They’re basically built to be shot down,” she said. “It’s full-scale, real world, real life, combat training – not with a simulator or anything else.”

International Aviation Exhibition 2012

Airshow China 2012 will take place on Nov. 13-18, 2012, in Zhuhai, Guangdong, China. Since 1996, the Show has been successfully held in Zhuhai in every even-number year for eight sessions.

The China International Aviation Exhibition Center, Zhuhai, China (Zhuhai Airshow Center) occupies an area of 1,300,000 square meters, with 3 car parks and 1 chalet car park, covering 496,900 square meters and can provide 60,000 parking lots.

The static aircraft display area is 408,000 square meters. The area of afforestation reaches 300,000 square meters. The 3 exhibition halls have an area of 43,120 square meters, providing 1,800 package stands. The press center is 11,860 square meters, and it’s a modernized one for news edition, trade negotiation, academic exchange, office working, etc. There are 35 chalets, and each one is 72 square meters, totaling 2,520 square meters.

If you’re going to visit International Aviation Exhibition 2012 here is contact info:
PHONE: +86-756-336 9235 .
FAX:+86-756-337 6415.
EMAIL:zhuhai@airshow.com.cn

Earth-Like Planet

It’s reported that NASA’s Kepler deep space probe has found a planet, similar to Earth. It’s close to the size of earth and about 352 light years away. The planet is called Kepler-22b. The planet orbits a bright star like the our sun.

“We’re getting closer and closer to discovering the so-called ‘Goldilocks planet,'” Pete Worden, director of NASA’s Ames Research Center said.

the fact is amount of the total candidate planets that Kepler has found to date is 2,326, 207 of them are approximately Earth-size. More of them, 680, are a bit larger than our planet, then falling into the “super-Earth” category. The total number of candidate planets in the habitable zones of their stars is now 48.

UK News

The Smallest Robot in the World

Bruce Donald and his colleagues, engineers and computer scientists from Dartmouth College have built the smallest robot in the world which is the thickness of human hair and shorter than the sharp point of a thumb tack, integrated in a small package, wireless powered and controlled. However, the robot takes over ten thousand steps a second and continue their motion for over half an hour with no sign of fatigue, with net motion of over one foot in length. That represents over 30 million steps; a human taking that many steps would go over half way around the world.

Features:

60x250x10 micro-meter robot made of polycrystaline silicon and chromium
Utilizes surface micromachining (MEMS) with stress engineering to produce out-of-plane curl.
Monolithic fabrication from poly-silicon includes on-board:
power and control signal pickup,
decoding and state memory (electro-mechanical), and
locomotion and turning.
Two gaits:
forward walking: MEMS Scratch Drive propulsion only, and
turning: Propulsion and Turning Arm both deployed.
12nm average step size.
Operation demonstrated at 16kHz (not an intrinsic speed limit).
Teleoperation alows motion anywhere on a plane.
Moves on an insulated substrate with submerged interdigitated electrodes.
Control is one-wire (plus ground) with four level logic, and is independent of robot position or orientation on substrate surface.