Creater behind dinosaur extinction mapped

Scientists have for the first time created a detailed map of the underwater creater that possibly led to the extinction of dinosaurs about 65 million years ago. About 65 million years back, an asteroid or comet crashed into a shallow sea near what is now the Yucatan Peninsula of Mexico, researchers said. The resulting caused the extinction of many land plants and large animals, including most of the dinosaurs, they said. Researchers from the Monterey Bay Aquarium Research Institute (MBARI) have found evidence that remnants from this devastating impact are exposed along the Campeche Escarpment-an immense underwater cliff in the southern Gulf of Mexico.

Posted By Latansa Travel4:11 AM

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Why does tyres always in black colour

The black color of tyres was originally the result of the production methods employed. Rubber-which is a pale yellow, milky substance obtained from rubber trees-was the raw material first used for the manufacture of tyres, although synthetically produced versions tend to be used these days. In this natural state, latex rubber degree of hardness, elasticity and wear resistance after it has been vulcanized (a process that ties the rubber molecules together) and soot has been added.

 During several brief periods during the 20th century there were passing fads for white tyres, and tyres with a blue tread also appeared on the market for a short time. In both cases, however, the color was only a layer that had been applied to the black rubber, and it tended to come off in parts.

      Only very recently have manufactures been able to replace the soot with a light-colored silicate and to make tyres in any color by the addition of a range of different pigments. However, tyres in novel colors are still quite rare because the silicate process is very expensive. Furthermore, market research indicates that most consumers prefer black tyres because they consider them to be more reliable. Rathnavath Ravinaik

Posted By Latansa Travel9:00 PM

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A lift into space

Taking a lift to the space station – an American company is already working on the concept

In 1865, inspired by the Eiffel Tower in Paris, the Russian space pioneer Konstantin Tsiolkovski designed a 36,000-km-tall tower at the Equator. At the top of the tower, in geostationary orbit, the speed of the tower would match the orbital speed, allowing a person to float freely away into space. To get to the top, the tower would be fitted with a lift. Of course, construction of such a tower is impossible, but in 1960 the Russian scientist Yuri Artsunatov realized that the tower itself was unnecessary. All that was needed was for the lift’s carrier cable to be lowered from a satellite and anchored on Earth. This cable would obviously need to be made from a material much stronger and lighter than anything existing, since even a steel cable a mere 9km long would break under its own weight. Nevertheless, there are hopes that in the not too distant future it will be possible to make sufficiently strong cables from a carbon nanotubes- microscopically small tube of carbon atoms arranged in a honeycomb pattern. Despite the lack of suitable materials, a company in the USA has already announced that it plans to put the first sky lift into operation within 25 years.

Posted By Latansa Travel12:58 AM

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How do newly discovered celestial bodies get their names?

On 30 January 1996 this comet was discovered by Yuji Hyakutake for whom it was named. Officially the comet is known both as Hyakutake and C/1996 B2.

Only the astronomers’ professional organization, the International Astronomical Union (IAU) can decide on names, and there are strict rules surrounding the naming of celestial bodies. For example, comets are always named after their discovered. In the case of asteroids, the discoverer is entitled to suggest a name but it must be approved by a committee of the IAU. These days, most stars are merely given a catalogue number which usually contains a set of celestial coordinates indicating the body’s position in the sky.

Posted By Latansa Travel4:32 AM

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