Thursday, May 10, 2012
The Sun
The Sun in our galaxy is a star -like yellow dwarf among others: the Milky Way contains between 200 and 400 billion stars, whose 20-40000000000 would be yellow dwarf . Like any star under the laws of the physical current, allows the mass density in his heart to be high enough to cause reactions of thermonuclear fusion continuously. Every second the sun's core fuses 564 million tons of hydrogen and produces 560 million tons of helium . The mass difference between the proceeds (helium) and reactive (hydrogen), or 4 million tons, the equivalent mass of the huge amount of energy produced: 4 × 10^26 watts , which is the energy radiated into space in the form of electromagnetic waves such as visible light.
The Sun is a yellow dwarf moderately large, but the name is misleading since the Sun is larger and brighter than most stars of the Milky Way (most of the stars of the Milky Way is the red dwarf , smaller). It is located in the middle of the main sequence of the Hertzsprung-Russell , however, the stars brighter and hotter than the Sun are rare, while stars less luminous and cooler are common.
The Hertzsprung-Russell the main sequence is from bottom right to top left.
It is believed that the Sun's position on the main sequence indicates that it is far from having exhausted its supply of hydrogen for nuclear fusion. To date, calculations establish that it has dispersed in the form of energy 3 thousandths of its initial mass. It becomes progressively brighter: early in its history, its luminosity was less than a third of that of today.
Calculating the ratio of hydrogen and helium in the solar interior suggests it is about midway of its life cycle. In more than five billion years, he leaves the main sequence and become bigger, brighter, cooler and red: a red giant ,. At that time, its brightness will be several thousand times that of today.
The Sun is a Population I star , was born after one or several "generations" of stars. It contains more elements heavier than hydrogen and helium (the "metals" in astronomical language) that the population II stars. These metallic elements were formed in the explosion of nuclei more massive stars, the supernovae . The oldest stars contain few metals, while stars later contain and more. It is believed that this high metallicity was essential for the development of the planetary system, because planets form by accretion of "metals"
Solar system
The solar system is a planetary system composed of a star, the Sun, and celestial bodies or defined objects orbiting around it (ie, our planetary system): the eight planets and their moons connus1 165 (commonly called the "moons "), the five dwarf planets, and billions of small bodies (asteroids, icy objects, comets, meteorites, interplanetary dust, etc..).
Schematically, the solar system consists of the Sun, four terrestrial planets internal to an asteroid belt composed of small rocky bodies, four gas giant outer belt and a second called the Kuiper belt, composed of icy objects. Beyond this belt is a disk of scattered objects, named according to the theory advanced by Jan Oort, the Oort cloud. Then comes the heliopause, the solar system limit defined by the judgment of the solar wind (they become weaker than the galactic wind).
The nearest to farthest (the Sun), planets of the system are called Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Six of those have planets orbiting satellites and each of the outer planets is surrounded by a planetary ring dust and other particles. All planets, including Earth, are named after gods and goddesses of Roman mythology and Greek mythology.
The five dwarf planets, with names of various deities, Pluto is the oldest known object in the Kuiper belt, Ceres, the largest object in the asteroid belt, Eris, the largest dwarf planet which lies in the scattered disk objects, Haumea and Makemake and objects of the Kuiper Belt. The dwarf planet orbiting beyond Neptune, which is the case of four of them, are also classified as Pluto.
Wednesday, May 9, 2012
Rare Human - Daniel Browning Smith
Daniel Browning Smith He born on 1979.He is the most flexible man alive and the most famous contortionist. A five time Guiness Record holder, this man is also known as “The Rubberboy”.Daniel Browning Smith, had the strangest abilities.when he was in 4 years old, when roughhousing with his siblings, he jumped off the bunk bed to land in a split. His father , amazed at his son’s unique gift, collected some photographs of contortionists from the local library to show Daniel browning smith. Daniel wanted to be a contortionist. But not just any contortionist,
THE WORLD’S GREATEST CONTORTIONIST.He has been in many professional basketball or baseball games and on The Tonight Show with Jay Leno, ESPN’s Sports Center, Oprah Winfrey, Ripley’s Believe It or Not, Cirque du Soleil, Best Damn Sports Show Period, The Discovery Channel, Men in Black 2, HBO’s Carnivale, and CSI: NY and American got a talent. He dislocates his arms to crawl through an unstrung tennis racquet. He performs contortion handstands and unique acrobatics."The Rubber Boy"Five time Guiness Record holder,The most flexible man alive and the most contortionist.
Watch!!!
Rare Human - Scott Flansburg
Scott Flansburg is one of the rare human calculator.when he was 9 years old he diccovered his mental abilities ,he was able to solve math questions by his teacher without needing to write down the calculations.
Flasnsburg can substract,multiply,divide,and find square and cube roots in his mind almost with calculater accuracy. Around 1990 he began using his ability in an entertainment and educational context. In 2001 the Guiness Book of World Records listed him as "Fastest Human Calculater". after he broke the Guiness World record for adding the same number to itself more times in 15 seconds than someone could do with a calculator.In 2002 Flansburg called The Human Calender" B'coz he invented a 13 month alternative to the Gregorian calender.In 1998 he published the book "Math Magic for Your Kid" and more.he given lectures and presentation at schools.He is a proponent of students becoming comfortable with calculation methods instead of relying on table memorization.
He is a mistery of human!!
Watch!!!
M Theory
M-Theory is the name for a unified version of string theory, proposed in 1995 by the physicist Edward Witten. At the time of the proposal, there were 5 variations of string theory, but Witten believed that each was a manifestation of a single underlying theory.
He and others identified several forms of duality between the theories which, together with certain assumptions about the nature of the universe, could allow for them to all be one single theory: M-Theory. One of the major components of M-Theory is that it required adding yet another dimension on top of the already-numerous extra dimensions of string theory, so that the relationships between the theories could be worked out.
Though physicists have still not uncovered the secrets of M-Theory, they have identified several properties that the theory would have:
01. 11 dimensions of spacetime
02. contains strings and branes
03. methods of using compactification to explain how the extra dimensions reduce to the four spacetime dimensions we observe
04. dualities and identifications within the theory that allow it to reduce to special cases of the string theories known, and ultimately into the physics we observe in our universe.
Monday, May 7, 2012
Welcome
welcome to my new galaxy blog. This is my first post and i'm going to share some details with you about mystery things of galaxy and earth. support us by sharing this blogspot .
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