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Saturday, November 3, 2012

Titan glows in the dark


Picture of the largest of Saturn's Titan, made ​​by NASA's Cassini spacecraft in the dark, showed a mysterious glow of Titan's atmosphere.

If you were standing on the surface of Titan, you would not notice this glow, as his power is only a few millionths of a watt. The scientists were able to fix this weak light with a camera apparatus Cassini, allowing you to take pictures with a long exposure.

Mountains Nereid indicate "glacial past" Mars


High-resolution stereo camera orbiting Mars the Mars Express took pictures of the mountain range of Nereid at a distance of almost 380 kilometers north-east of the crater Hook.

Affects its magnificence mountainous terrain surrounding the Nereids, stretched along the northern edge of the basin Argir, one of the largest shock depressions on Mars.

Friday, November 2, 2012

Life is to be found where there is an asteroid belt


Rebecca Martin of the University of Colorado at Boulder, and Mario Livio of the Space Telescope Science Institute in Baltimore, developed a rather wasteful theory suggests that, for the formation of life on Earth in the solar system should positively be an asteroid belt, and stringently, where it is now.

Observations exoplanetary systems show that the so-called warm dust, which, apparently, the result of asteroid is concentrated in areas close to the "snow line." This may be because it was her form giant planets; the light elements are not able to condense on the surface of a celestial body, whether it is closer to the Sun.

The future belongs to microbes


The last form of life on Earth would fall by 2.8 billion years, the sun burned dying - red giant. About a billion years before the only living things on the planet will remain single-celled organisms, hiding in isolated hot and salty waters.

This gloomy prognosis for life on Earth, but a ray of light for those who are looking for life on other planets. After thus renewed hope its discovery in places previously considered inhospitable.

"Diamond" planet is 40 light-years away in the constellation of Cancer


A group of American and French astronomers discovered a planet whose surface consists mainly of graphite and diamond.Which called 55 Cancri e, orbits the star, which is visible to the naked eye. It is located 40 light-years away in the constellation of Cancer.

The planet orbits the star so quickly that year it takes less than 18 hours.

What occur to the very first stars in the universe?


Most distant and bright supernova, known to scientists today, probably happens in the explosions when the universe was much younger - just after the Big Bang.

What both these unusually bright and slowly fading. These properties are consistent with what is known as a supernova with the pair instability, a rare explosion mechanism, which is expected to occur with massive stars, is substantially free of metals. 

Three star charts on exoplanets


In these three celestial star charts grouped all available information about exoplanets currently available. Each of them should be extended to enlarge:

1. This letter highlights the sky where the stars have been detected potentially habitable exoplanet. Each is represented by corresponding brightness.