Eli, humans have been questioning it for thousands of years.<\/p>\n\n\n\n
Since the era of the ancient Greeks, mathematicians Metrodorus (400-350 BC) tried to answer him: Believe in the universe with the Earth as a \u201cone-and-only world,\u201d is tantamount to believe in the existence of \u201ca huge fields that only have a sprig of the plant.\u201d<\/p>\n\n\n\n
According to him, it is not possible.<\/p>\n\n\n\n
About 2,000 years later, in the 16th century, the Italian philosopher Giordano Bruno stating the same thing.<\/p>\n\n\n\n
\u201cThe sun and the earth countless\u201d there must be somewhere else, he said, and all the \u201cspin mengeilingi the sun, in exactly the same way with the planets in our solar system.\u201d<\/p>\n\n\n\n
Scientists now know that Metrodorus and Bruno is basically correct. Currently, astronomers such as I was studying this question in new ways.<\/p>\n\n\n\n
\u201cExoplanets\u201d outside of our solar system<\/p>\n\n\n\n
There is evidence to suggest the existence of \u201cexoplanets.\u201d These planets orbiting stars other \u2013 not our sun.<\/p>\n\n\n\n
The evidence was found by the space telescope Kepler, which was launched Aviation and Space Agency of the United States (NASA) in 2009.<\/p>\n\n\n\n
For four years, the telescope continues to constantly keep an eye on the region of space in the constellation Cygnus. If viewed from the Earth, then the area is only less than 1% of the area of the sky that we view.<\/p>\n\n\n\n
How does a telescope work?<\/p>\n\n\n\n
Telescope Kepler has 42 of the camera, similar to the type of smartphone camera you use to take pictures. In a region in space, the telescope is able to recognize more than 150 thousand stars.<\/p>\n\n\n\n
Every half hour, telescope Kepler observing the amount of light radiating from every star. Well, on Earth, a team of scientists Kepler check the data.<\/p>\n\n\n\n
For most stars, the amount of emanation of light is almost the same from time to time.<\/p>\n\n\n\n
But, for a few hours, there are about 3,000 stars that have a luminous flux which decreases little by little. Decrease the brightness of this happens regularly, like a clock that is ticking.<\/p>\n\n\n\n
Astronomers conclude, the decline in luminous flux occurs because there is a planet orbiting the star. During the rotation, the planet periodically blocking some of the light captured by the camera Kepler.<\/p>\n\n\n\n
Events when a planet passes between the star and the telescope is known as a transit.<\/p>\n\n\n\n
And that means, in one point of that space, telescope Kepler find 3.000 planet.<\/p>\n\n\n\n
This is just the beginning<\/p>\n\n\n\n
Although the figure of 3,000 planet sounded very much, there must be a lot of other planets in that area that is not detected. Therefore, the orbits of the planets it’s never block the light seen by Kepler.<\/p>\n\n\n\n
Anyway, the orbits of the planets are not all the same; the shape of lintasanya random and very diverse.<\/p>\n\n\n\n
But, with the number of transits observed by the Kepler and knowledge astronomers about the geometry, we can estimate the total number of exoplanets out there.<\/p>\n\n\n\n
So far, scientists believe that the average every star has at least one planet.<\/p>\n\n\n\n
This discovery has transformed the science of astronomy and our view of the universe. 100 billion stars, 100 billion planets<\/p>\n\n\n\n
As an example, the Milky way galaxy has at least 100 billion stars. It means there are at least 100 billion planets in this galaxy.<\/p>\n\n\n\n
Well, the universe is estimated to contain about 2 trillion galaxies \u2013 or 2.000.000.000.000! Then, each galaxy also contains dozens or even hundreds of billions of stars.<\/p>\n\n\n\n
So the number of planets in the universe very much. The amount is roughly equivalent to a grain of sand on every beach on Earth we.<\/p>\n\n\n\n
Some of the planet is a gas giant, like Jupiter in our solar system. Other very hot, like Venus. The other planets may contain water or shaped ice planet. And some, like the Earth.<\/p>\n\n\n\n
The team Kepler has even take into account the number of planets similar to the Earth in the \u201cHabitable Zone\u201d \u2013 the region around a star-the star that allows a planet has a temperature sufficient, as well as abundant water.<\/p>\n\n\n\n
As a result, there are about 50% of stars similar to our Sun in the Milky way galaxy that has an Earth-like planet in the Habitable Zone of each of them.<\/p>\n\n\n\n
That is, there are billions of planets that are potentially habitable \u2013 and this is just in our galaxy alone.<\/p>\n\n\n\n
Could there be life in other places?<\/p>\n\n\n\n
Although there is no enough evidence, many scientists \u2013 including me \u2013 thought that is not possible the Earth is the only planet that has life. If true, then it would be surprise him with the parable of \u201cthe great fields that contains a sprig of the plant\u201d.<\/p>\n\n\n\n
When we will be able to detect life elsewhere? What is the life of these also have intelligence? Will man receive a message from another civilization?<\/p>\n\n\n\n
Today, hundreds of scientists around the world race-the race to answer these questions.<\/p>\n\n\n\n
The need for digital IT is needed in daily activities, Bead IT Consultant is the right choice as your partner, visit our website by clicking this link: www.beadgroup.com.<\/p>\n\r\n