How Many Rings Does Mercury Have

Fertile Frontiers Alien-life hunters focus on moons in outer solar system

Spotted the solar system and his henchman are now ringed intimidate some tantalizing treasures of their gravitational clutches. Circling Jupiter and Saturn are more than a hundred moons, which hosts some of the most promising for extraterrestrial life in the solar system.

But not each of these moons is an equal opportunity alien Petri dish. Scientists are debating what might be best to seek a life mission. Their attention is focused on a trio frozen: Titan, Enceladus and Europa.

For centuries, these satellites appeared in the sky than mere points of light.Now, the three musketeers moony have personalities. Titan is huge exotic, home of lakes of oil and a thick atmosphere. Enceladus tiny spit of salt water in the air around Saturn. And surprisingly calm, ice-crusted Europa probably hosts a sloshing ocean so deep that it tickles mantle rocks from the moon.

Scientists do not expect to find plesiosaurs Europan Titanian or redwoods, of course. But some experts believe that these moons may be the best chance for turning up tiny, animated germs - or at least their tracks.

"It is interesting to note that the three top candidates are all in the outer solar system," said Alan Stern of Southwest Research Institute in Boulder, Colo. In fact, these distant worlds could even eclipse the Earth's closest planetary neighbors. " The inner planets are not such good candidates. Venus, Mercury - not even on the list. Mars? Not as high as three. "

Decide which of these three worlds to visit is not exactly laying a knock-down drag-out fight, but some scientists have their favorites.These preferences are based on characteristics thought to be a habitat for familiar - the flavors of life - or unfamiliar.

"When we look at life beyond the Earth, I think there are four things we need to look," said Chris McKay, of the Research Center NASA Ames in Mountain View, California First, said there is liquid water. "It's always the starting point." Second, organic matter, ie carbon-containing compounds. "Water is the life that lives;. Organic matter is what it is made of" third is nitrogen. "You may think this is the secret ingredient.You should add that to the organic matter organic. This is probably the carbon atom to the most important post, "said McKay. And finally, an energy source. "Something to eat. The sunlight if you live near the surface. The chemical energy if it is not.

Knot Poison Ring | Lovely Rings

General Knowledge Pt IX .-

Where was Mahatma Gandhi on Independence Day?

Even as India celebrated its hard-won freedom August 15, 1947, Mahatma Gandhi, who had played such a role in sterling in the movement, was in Kolkata. Saddened by the partition of the country, he spent the day fasting and prayer. This was in stark contrast to the celebrations in Delhi, where Nehru gave his date with Destiny speech 'as the Indians rejoiced in their new autonomy.

What is the largest cantilever bridge in the world?

A cantilever bridge is formed by two projecting beams or trusses joined to the center by a connecting member and supported on pillars and anchored by cons-balancing of its members. The Quebec Bridge in Canada is considered to bridge the world's largest cantilevered. It crosses the lower St. Lawrence River west of Quebec City Bridge is a riveted steel truss structure and 987 feet long, 29 meters wide and 104 meters high. It is currently home to three lines of the highway, a railway line and a pedestrian crossing. It was once the tramway. Each cantilever span is 170 meters long.

When did G-8 come into existence?

The G-8 (Group of 8 nations) officially established until 1998 that the concept of major industrial democracies will meet annually to discuss and resolve economic and political concerns have existed since 1975. At that time, he was the G-6 (the United States, the United Kingdom, Japan, Italy, Germany and France) who formed the international community at the first summit in Rambouillet, France. Canada joined the 1976 summit in Puerto Rico. In 1998, the Birmingham Summit saw full Russian participation.Since 1991, the USSR and then Russia participated in dialogues at the top position with the G-7.

When the first Disneyland in place?

The first Disneyland was established July 15, 1955 in Anaheim, California, USA The opening was attended by 28,154 people and 90 million people watched him on television. The theme park was designed by Walt Disney is famous for his creation of Mickey Mouse and gang. Disney acquired 160 acres of orange groves and walnut trees in Anaheim, south of Los Angeles. Construction began July 21, 1954 and will cost about $ 17 million.

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