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Martian soil is still able to accommodate some form Discover Life

Martian soil samples analyzed by the Phoenix ingredients to develop some form of life scientists said on Thursday charged with the mission. These samples tested by Phoenix, which also confirmed the presence of ice in the Martian soil, are much more alkaline than previously thought, scientists said in a telephone news conference from Tucson, Arizona.

There are still many unanswered questions about the true composition of Martian soil "We basically found what appear to be the requirements, the nutrients to support life, past or present" on Mars, said Sam Kounaves, one of the scientists. "We are shocked by the data we have received. It's the kind of soil that one would find in the backyard, very alkaline.

"You could grow asparagus in it," he said. "There is nothing in it that could exclude the possibility of life. Rather, it appears to be very friendly," he added.

magnesium, sodium, potassium and other elements

The analysis of samples by the chemical laboratory of the spacecraft also found the presence of magnesium, sodium, potassium and other elements added. However, Kounaves noted that analysis of other samples needed to accurately determine whether all the necessary items. "There are still many unanswered questions about the true composition of Martian soil, "said David Paige, a scientist at the University of California.

But apart from the existence of water, the ship has not yet confirmed the presence of carbon, the other crucial element to develop some sort of life as we know it on Earth. The NASA spacecraft down near the Martian north pole on 25 May after a 10-month journey to the planet. The main purpose of his mission is whether in the distant past the planet housed, besides water, organic elements that could lead to a kind of life.

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three planets like Earth

European researchers say they have discovered a set of three 'super-Earths "orbiting a nearby star, two systems and other plots where small orbiting planets that could resemble our own. As declared at a conference of specialists held in France, research suggests that these planets may be more common than we think.

One of them completes a full orbit in just four days. The trio of planets are orbiting a star with a mass slightly less than that of our sun is located about 42 light years Doradus and Pictor constellations.

As shown in artistic recreation shown above, the planets are bigger than Earth. You have 4.2 times the mass of our planet, one is 6.7 times larger and the third 9.4.

surround its star at an extreme speed. One of them completes a full orbit in just four days, a pittance compared to the 365 days that used to spin the Earth around the Sun The other two planets are a little slower, it takes 10 and 20 days respectively complete orbit.

Michel Mayor, the Astronomical Observatory of Geneva, has used the HARPS telescope for this finding. So far found in space more than 270 exoplanets, most of which are as big as Jupiter or Saturn, because smaller planets are more difficult to find.

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A pair of galaxies separated by 31 million light years away

entry number 51 in Charles Messier's famous catalog of the original spiral nebula, a large spiral galaxy with a well defined structure also cataloged as NGC 5194. Lie

officially in the limits of the small constellation Canes Venatici. With more than 60,000 light years across, the spiral arms of M51 and dust lanes are clearly players in front of his companion galaxy (Right), NGC 5195.

image data of the Advanced Camera Tracking Telescope have been reprocessed to produce this alternative portrait of the well known interaction of two galaxies. That image processing has made very clear details, enhance color and higher contrast in weak areas, enlarging the dust lanes and flows across her small companion, along with features in the vicinity and center of M51 as such.

The couple is about 31 million light years away. Not far from the handle of the Dipper (Ursa Major), these galaxies lie officially in the limits of small constellation Canes Venatici.

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The Milky Way has two arms of stars and not four as previously thought

The Milky Way galaxy that is home to Earth, has two arms of stars, not four as previously thought astronomers, as revealed in the images provided by the Spitzer Space Telescope NASA. The theory of stellar four arms had been impossible to confirm until now precisely because of the fact that the Earth is inside.

Our Sun is between Perseus and Sagittarius But now Spitzer has provided a new basis to reconsider the whole structure of the Milky Way, said Robert Benjamin, an astronomer at the University of Wisconsin, during a press conference in St. Louis, Missouri.

"We will continue our picture editing (Galaxy) in the same way that early explorers sailing around the world corrected their maps," he said in a report submitted to the Astronomical Society of the United States.

Since 1950, astronomers had models based on observations of galactic cosmic gases that suggested a spiral structure with four arms of stars, called Norma, Scutum-Centaurus, Sagittarius and Perseus. Our Sun is between Perseus and Sagittarius.

800,000
parts

For many years, created maps of the galaxy on the study of a section or a single method, Benjamin said in a statement released by the Jet Propulsion Laboratory (JPL) of NASA.

"Unfortunately, when comparing these models did not match. It was like studying an elephant blindfolded," he said. But observations by infrared instruments made in the past decade led to reconsider those structures.

With Spitzer, astronomers have now got a much broader picture of the galaxy with a mosaic of 800,000 pieces which includes 110 million stars, JPL said. To further these observations, Benjamin has developed software that allowed him to count the stars and measure the density of stars. And when he looked toward group Scutum-Centaurus, found, as expected, an increase in the number of stars. But by focusing on Sagittarius and Norma, no such increase was stellar. Perseus is at the opposite end of the galaxy and can not be seen in Spitzer images.

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discovered the smallest extrasolar planet known to date

The new planet, called MOA-2007-BLG-192Lb, is about three times the size of Earth and orbits a star with a mass so small that researchers believe that it is a "failed star" or a brown dwarf: a star that never achieved the mass required to initiate fusion reactions in its core.

explains the science specialist for the BBC, Paul Rincon, astronomers found the planet using the technique of gravitational distortion, which uses the bending of light when the rays pass close to an object large, like a star.

Some researchers have speculated that the planet may have a dense atmosphere, or even be an ocean on its surface, says Rincon. The

NASA space telescope James Webb, which should become operational in 2013, can help you find signs of life on planets with a mass similar to that of Earth, orbiting low mass stars near the Sun

The Holy Grail

According to Paul Rincon, the discovery of a planet with a mass similar to Earth's is considered the "Holy Grail" of research on extrasolar planets, and that would be most suitable for life.

Speaking of the new planet, Nicholas Rattenbury, one of those responsible for finding, University of Manchester, said "it is possible that this has a dense atmosphere could act like a big blanket, helping to keep it warm. "

This, according Rattembury," has led to speculate on the possibility of a liquid ocean on its surface.

The planet MOA- 2007-BLG-192Lb orbiting a star with an orbital radius similar to that of Venus. This star is believed to be between 3,000 and one million times fainter than the Sun, so the top of the planet's atmosphere must of being cold.

is also believed that in addition to cold, this planet must be extremely dark.

The planet MOA-2007-BLG-192Lb was found with the MOA-II telescope located in the Mount John Observatory in New Zealand, shown in the image on the right. Next to it, an artistic impression of the planet discovered by NASA.

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Phenix, a new hope

Is ice that lies beneath the Phoenix lander on Mars? Although not at first sight, it is likely that under the substrate if you are an ice layer.

space probe landed a week ago, and have to dig into Martian soil in search of ice, but the instigators of the probe itself may have uncovered some during descent.

This image above is a photograph made last week by the Robotic Arm Camera and shows us a rare colored substance just in front of the landing of the Phoenix.

During the following weeks, Phoenix will continue photographing his surroundings, analyze the composition of the substrate so clear and dig around. If this unusual Martian ice clear substrate out would give the Phoenix a pedestal very timely to investigate the history of water on Mars, and to better determine the border between the ice and the land was ever capable of sustaining life.