Showing posts with label history. Show all posts
Showing posts with label history. Show all posts

Sunday, 12 February 2012

Antarctic Lake Vostok-may reveal life history

Russian scientists opened a frontier miles under the Antarctic ice, after drilling down and finally reaching the surface of 20-million-year-old Lake Vostok, an achievement the mission chief likened to placing a man on the moon. The gigantic buried freshwater reservoir could harbor life from Earth's distant past.

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The scientific commuity anticaptes that Lake Vostok could host living organisms that have been locked in frigid darkness for some 20 million years, as well as clues to the search for life elsewhere in the solar system such as Jupiter's "Ocean Moon," Europa, under the ice crust on Mars, and Saturn's moon Enceladus, also believed to harbor a vast buried ocean. Penetrating the surface of the lakecame after more than two decades of drilling when the Russian team made contact with the lake water Sunday at a depth of 12,366 feet (3,769 meters), about 800 miles (1,300 kilometers) east of the South Pole in the central part of the continent.
Lake Vostok is kept from freezing into a solid block by the more than two-mile-thick crust of ice that acts like a blanket, keeping in heat generated by the Earth's geothermal energy.
"They followed different laws of evolution that are yet unknown to us," he said.Studying Lake Vostok will also yield insights about the origins of Antarctica, which is believed by many to have been part of a broader continent in the distant past.

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But Jupiter's Europa might not only sustain, but foster life, according to the research of University of Arizona's Richard Greenberg, a professor of planetary sciences and member of the Imaging Team for NASA's Galileo Jupiter-orbiter spacecraft.
Europa, similar in size to Earth's moon, and has been imaged by the Galileo Jupiter-orbiter spacecraft. Its surface, a frozen crust of water, was previously thought to be tens of kilometers thick, denying the oceans below any exposure. The combination of tidal processes, warm waters and periodic surface exposure may be enough not only to warrant life, but also to encourage evolution.
With Jupiter being the largest planet in the solar system, its tidal stresses on Europa create enough heat to keep the water on Europa in a liquid state. More than just water is needed to support life. Tides also play a role in providing for life. Ocean tides on Europa are much greater in size than Earth's with heights reaching 500 meters (more than 1,600 feet). Even the shape of the moon is stretched along the equator due to Jupiter's pull on the waters below the icy surface.
The mixing of substances needed to support life is also driven by tides. Stable environments are also necessary for life to flourish. Europa, whose orbit around Jupiter is in-sync with its rotation, is able to keep the same face towards the gas giant for thousands of years.  There is strong evidence that the ocean below the ice is connected to the surface through cracks and melting, at various times and places. As a result, the , if there is one, includes not just the liquid water ocean, but it extends through the ice up to the surface where there is access to oxidants, organic compounds, and light for photosynthesis.
Tides have created the two types of surface features seen on Europa: cracks/ridges and chaotic areas, Greenberg said.The ridges are thought to be built over thousands of years by water seeping up the edges of cracks and refreezing to form higher and higher edges until the cracks close to form a new ridge.
The chaotic areas are thought to be evidence of the melt-through necessary for exposure to the oceans.
The tidal heat, created by internal friction, could be enough to melt the ice, along with undersea volcanoes - a combination of factors would give organisms a stable but changing environment -- exactly the type that would encourage evolution.

Monday, 16 January 2012

Valentine's Day

Valentine's Day started in the time of the Roman Empire. In ancient Rome, February 14th was a holiday to honour Juno. Juno was the Queen of the Roman Gods and Goddesses. The Romans also knew her as the Goddess of women and marriage. The following day, February 15th, began the Feast of Lupercalia.

The lives of young boys and girls were strictly separate. However, one of the customs of the young people was name drawing. On the eve of the festival of Lupercalia the names of Roman girls were written on slips of paper and placed into jars. Each young man would draw a girl's name from the jar and would then be partners for the duration of the festival with the girl whom he chose. Sometimes the pairing of the children lasted an entire year, and often, they would fall in love and would later marry.

Under the rule of Emperor Claudius II Rome was involved in many bloody and unpopular campaigns. Claudius the Cruel was having a difficult time getting soldiers to join his military leagues. He believed that the reason was that roman men did not want to leave their loves or families. As a result, Claudius cancelled all marriages and engagements in Rome. The good Saint Valentine was a priest at Rome in the days of Claudius II. He and Saint Marius aided the Christian martyrs and secretly married couples, and for this kind deed Saint Valentine was apprehended and dragged before the Prefect of Rome, who condemned him to be beaten to death with clubs and to have his head cut off. He suffered martyrdom on the 14th day of February, about the year 270. At that time it was the custom in Rome, a very ancient custom, indeed, to celebrate in the month of February the Lupercalia, feasts in honour of a heathen god. On these occasions, amidst a variety of pagan ceremonies, the names of young women were placed in a box, from which they were drawn by the men as chance directed.

The pastors of the early Christian Church in Rome endeavoured to do away with the pagan element in these feasts by substituting the names of saints for those of maidens. And as the Lupercalia began about the middle of February, the pastors appear to have chosen Saint Valentine's Day for the celebration of this new feaSt. So it seems that the custom of young men choosing maidens for valentines, or saints as patrons for the coming year, arose in this way.

In some countries, a young woman may receive a gift of clothing from a young man. If she keeps the gift, it means she will marry him.
Some people used to believe that if a woman saw a robin flying overhead on Valentine's Day, it meant she would marry a sailor. If she saw a sparrow, she would marry a poor man and be very happy. If she saw a goldfinch, she would marry a millionaire.
A love seat is a wide chair. It was first made to seat one woman and her wide dress. Later, the love seat or courting seat had two sections, often in an S-shape. In this way, a couple could sit together -- but not too closely!
Think of five or six names of boys or girls you might marry, As you twist the stem of an apple, recite the names until the stem comes off. You will marry the person whose name you were saying when the stem fell off.
Pick a dandelion that has gone to seed. Take a deep breath and blow the seeds into the wind. Count the seeds that remain on the stem. That is the number of children you will have.
If you cut an apple in half and count how many seeds are inside, you will also know how many children you will have.




Wednesday, 21 December 2011

Road To Success

Mind is a goal seeking organism..Once you set a goal it starts working day and night to achieve it.However you must remember that it wants clarity and accuracy about your goal with a proper time frame.Most of the time,people talk of goals but they are not very clear about them.
There is a vast difference between having a wish to get something and a burning desire to achieve that.For this you should invest sufficient time to be clear about why you want to achieve the goal.Then you should dream of it,not while sleeping but eith your eyes open and cherish in your heart.Make it your inner calling and let your goal be North pole star of your life.
                     History is witness to this truth that only dreamers and believers have been achievers like empire builders,geographical discoveries,scientists,investors,etc.Every human being with a healthy mind has unlimited power to succeed and to reach any height in life.Everyone is unique creation of God with some unique sets of potentials to realize the purpose of life and achieve goals.
                                           Your subconscious mind is all powerfull to make you a winner.I feel,if you can master the art of feeding your subconscious mind with thoughts of being definite about your goal and visualize yourself as a winner,you can remove all hurdles between you and your goal.