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Thread: Meet Earth's older, bigger brother: Kepler 452b

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    Default Meet Earth's older, bigger brother: Kepler 452b

    Astronomers have found a planet they say is 'the closest twin to Earth' ever seen.Named Kepler-452b, the planet is the smallest world discovered orbiting in the habitable zone of a star.What makes this world remarkable is that it orbits its star at about the same distance that Earth orbits the sun. What's more, its home star looks to be similar to our sun.This Earth-like world has a 'substantial opportunity' to host life, Nasa says, adding that if plants were transferred there, they would likely survive. However, being 1.5 billion years older than our planet, the newly discovered cousin provides a glimpse into the future of Earth.By the time Earth reaches the same age as the distant planet, our sun will trigger an catastrophic greenhouse effect in Earth's atmosphere - drying up oceans and making the land a desolate desert.

    If Kepler-452b has a similar geographic composition to our planet then it is in danger of entering catastrophic phase of its life.

    The planet is 60 per cent bigger than Earth, and is located about 1,400 light years away in the constellation Cygnus.Its discovery brings the total number of confirmed planets to 1,030. It is 'the closest twin to Earth, or the Earth 2.0 that we've found so far in the dataset', said John Grunsfeld, associate administrator of Nasa's Science Mission Directorate.Kepler-452b is larger than Earth, but its 385-day orbit is only 5 per cent longer.It resides in something known as the habitable zone - or Goldilocks zone - which is an area around a star where liquid water could pool on the surface of an orbiting planet.It is also 5 per cent farther from its parent star Kepler-452 than Earth is from the sun.'This is so fascinating because Kepler 452b receives the same kind of spectrum and intensity of light as we do on Earth,' said Dr Daniel Brown, an astronomy expert at Nottingham Trent University.'This means plants from our planet could grow there if it were rocky and had an atmosphere. 'You could even get a healthy tan like here on holiday. Getting to our closest twin planet might take a while though, since it's 1,400 light years away.'Kepler-452 is 6 billion years old, 1.5 billion years older than our sun, has the same temperature, and is 20 per cent brighter and has a diameter 10 per cent larger.
    Thank you bala

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    An artist's impression of exoplanet Kepler-452b, which Nasa say is likely to be rocky, just like Earth. 'We can think of Kepler-452b as an older, bigger cousin to Earth,' said Jon Jenkins, Kepler data analysis lead at Nasa's Ames Research Center


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    The artistic concept compares Earth (left) to the new planet, called Kepler-452b, which is about 60 percent larger. The illustration represents one possible appearance for Kepler-452b - scientists do not know whether the planet has oceans and continents like Earth


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    Kepler-452 is 6 billion years old, 1.5 billion years older than our sun, has the same temperature, and is 20 per cent brighter and has a diameter 10 per cent larger




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    The planet is 5 per cent farther from its parent star Kepler-452 than Earth is from the sun, Nasa has said


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    This size and scale of the Kepler-452 system compared alongside the Kepler-186 system and the solar system. Kepler-186 is a miniature solar system that would fit entirely inside the orbit of Mercury


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    The first exoplanet orbiting another star like our sun was discovered in 1995. Exoplanets, especially small Earth-size worlds, belonged within the realm of science fiction just 21 years ago. Today, astronomers are on the cusp of finding something people have dreamed about for thousands of years - another Earth

    As well as confirming Kepler-452b, the Kepler team has increased the number of new exoplanet candidates by 521 from their analysis of observations conducted from May 2009 to May 2013, raising the number of planet candidates detected by the Kepler mission to 4,696. Twelve of the new planet candidates have diameters between one to two times that of Earth, and orbit in their star's habitable zone. Of these, nine orbit stars that are similar to our sun in size and temperature. 'We've been able to fully automate our process of identifying planet candidates, which means we can finally assess every transit signal in the entire Kepler dataset quickly and uniformly,' said Jeff Coughlin, Kepler scientist at the SETI Institute.'This gives astronomers a statistically sound population of planet candidates to accurately determine the number of small, possibly rocky planets like Earth in our Milky Way galaxy.'These findings, presented in the seventh Kepler Candidate Catalog, will be submitted for publication in the Astrophysical Journal.

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    The habitable zone is the area around a star where liquid water could pool on the surface of an orbiting planet. The confirmation of Kepler-452b brings the total number of confirmed planets to 1,030




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    Last year astronomers announced the telescope had spotted its first Earth-sized planet in the habitable zone of another star.Kepler-186f, which is around 500 light years from Earth, was the first planet to be discovered that is reminiscent of our own.In January Nasa announced another two new planets - Kepler 438b, which is thought to be only 12 per cent bigger than Earth, and Kepler-442b, which is thought to be 33 per cent bigger.In July, Kepler spotted five planets orbiting around the same star - Kepler-444 - all of which are thought to be close to the size of Earth. Paul Hertz, director of astrophysics at Nasa, said identifying worlds that could be home to alien life with Kepler would allow future missions to look at them more closely.He said: 'Future Nasa missions, like the Transiting Exoplanet Survey Satellite and the James Webb Space Telescope, will discover the nearest rocky exoplanets and determine their composition and atmospheric conditions, continuing humankind's quest to find truly Earth-like worlds.'In 2017 Nasa plans to launch the successor to the Kepler mission, that will search the nearest solar systems for exoplanets. Grunsfeld said that with better telescopes and satellites, scientists may one day be able to 'make the first primitive maps of an Earth-like planet', including details of 'whether they have oceans, clouds, perhaps even seasons'.

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    Twelve of the new planet candidates have diameters between one to two times that of Earth, and orbit in their star's habitable zone



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    The sweep of Kepler mission's search for small, habitable planets in the last six years. The first planet smaller than Earth, Kepler-20e, was discovered in December 2011 orbiting a sun-like star slightly cooler and smaller than our sun every six days. But it is scorching hot and unable to maintain an atmosphere or a liquid water



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    Chalak¤Guy®™ Lieutenant parveztubez's Avatar
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    Kepler-452b looks promising.



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    An artist’s impression shows the surface of Kepler 452b. In the scenario depicted here, the planet is just entering a runaway greenhouse phase of its climate history. Kepler 452b could be giving us a preview of what Earth will undergo more than a billion years from now as the sun ages and grows brighter. Credit: Danielle Futselaar / SETI Institute

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    SB Champion Captain rohan_j's Avatar
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    Quote Originally Posted by parveztubez View Post


    An artist’s impression shows the surface of Kepler 452b. In the scenario depicted here, the planet is just entering a runaway greenhouse phase of its climate history. Kepler 452b could be giving us a preview of what Earth will undergo more than a billion years from now as the sun ages and grows brighter. Credit: Danielle Futselaar / SETI Institute
    If you take into account the amount of emissions of green house gases due to human activities, I don't think we'll have to wait for some billions of years to see the above picture.
    BTW, scientists say that we are on the verge of becoming the TYPE 1 civilisation, i.e. Civilization which moves from planet to planet. And we are still depending upon fossils fuels for power generation.

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    SB Guru Major rv102938's Avatar
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    Kepler pe jaane ke liye share-ricksha nikalne wali hai, bolo kon kon aayenga....it only takes 1400 years one way at the speed of light...

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    SB Guru Major rv102938's Avatar
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    I am sure there is life on this planet and there are 1000s of planets that have life, maybe a few with intelligent life. but there are two problems why intelligent life may never contact each other -

    1) these planets are far too apart. even if we are able to create a rocket that travels at the speed of light, it will take 1000s of years for one message to go and back.
    2) no one considers the fact that we are also apart in time. maybe there was intelligent life on it a few million years back, but not now. we only know the Earth and surroundings for a few thousand years which is a tiny tiny fraction of time

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    Quote Originally Posted by rv102938 View Post
    Kepler pe jaane ke liye share-ricksha nikalne wali hai, bolo kon kon aayenga....it only takes 1400 years one way at the speed of light...
    u carry on,, i will hop in mid-way.just give me a call before reaching the signal

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    SB Guru Major ace of base's Avatar
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    Quote Originally Posted by rv102938 View Post
    I am sure there is life on this planet and there are 1000s of planets that have life, maybe a few with intelligent life. but there are two problems why intelligent life may never contact each other -

    1) these planets are far too apart. even if we are able to create a rocket that travels at the speed of light, it will take 1000s of years for one message to go and back.
    2) no one considers the fact that we are also apart in time. maybe there was intelligent life on it a few million years back, but not now. we only know the Earth and surroundings for a few thousand years which is a tiny tiny fraction of time
    well you should read the mysteries of the pyramids and maybe you will have a change of mind,,

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    SB Wizard Captain guy pearce's Avatar
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    ".....i have firm belief that life exists..or has existed on millions of planets throughout the universe. But considering the gargantuan scale...both of distance and time.....they are just like bubbles in a pond. Each is born..bursts..creates a ripple...which dies without even reaching the next bubble. And the cycle goes on...."
    Quote Originally Posted by rv102938 View Post
    I am sure there is life on this planet and there are 1000s of planets that have life, maybe a few with intelligent life. but there are two problems why intelligent life may never contact each other -

    1) these planets are far too apart. even if we are able to create a rocket that travels at the speed of light, it will take 1000s of years for one message to go and back.
    2) no one considers the fact that we are also apart in time. maybe there was intelligent life on it a few million years back, but not now. we only know the Earth and surroundings for a few thousand years which is a tiny tiny fraction of time
    .......here we go again

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    Bourne Captain RoleModel007's Avatar
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    Wonder what religion they followed there?

    #MoveThisToRPCsection
    First, ridiculed. Second, violently opposed. Third, accepted as being self-evident.

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    SB Guru Major rv102938's Avatar
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    Quote Originally Posted by RoleModel007 View Post
    Wonder what religion they followed there?
    ​shaant gadhadhari bheem shaant....

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    SB Guru Major ace of base's Avatar
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    Quote Originally Posted by rv102938 View Post
    ​shaant gadhadhari bheem shaant....

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