Know : Alien Planets Photo Gallery & Info

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The Smallest

This artist’s concept of Kepler-10b shows the smallest known exoplanet, announced in January 2011. [Full Story]

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Gliese 581 e used to hold the title of smallest alien planet. However, it was dethroned in January 2011, with the announcement of Kepler-10b. [Full Story]

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The largest exoplanet ever discovered is also one of the strangest and theoretically should not even exist, scientists say. Dubbed TrES-4, the planet is about 1.7 times the size of Jupiter and belongs to a small subclass of so-called puffy planets that have extremely low densities. The planet is located about 1,400 light years away from Earth and zips around its parent star in only three and a half days. [Full Story]

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Epsilon Eridani b orbits an orange Sun-like star only 10.5 light years away from Earth. It is so close to us telescopes might soon be able to photograph it. It orbits too far away from its star to support liquid water or life as we know it, but scientists predict there are other stars in the system that might be good candidates for alien life. [Full Story]

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This planet, CoRoT-7b, was the first confirmed rocky world outside our solar system, but it doesn’t look like a particularly pleasant place to live. It is tidally locked to its parent star, sees hellish 4,000 degrees Fahrenheit (2,200 degrees Celsius). It may also rain rocks and be the core of a vaporized gas giant. [Full Story]

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Luke Skywalker’s home planet of Tatooine in Star Wars had two suns, but that’s paltry compared to a Jupiter-like planet 149 light-years from Earth. This planet has three suns, with the main star similar in mass to our own sun. The triple-star system is known as HD 188753. Like Tatooine, the planet there is likely pretty hot – it orbits very close to the main star, completing one orbit every 3.5 days. [Full Story]

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With a surface temperature of -364 degrees Fahrenheit (-220 degrees Celsius), the extrasolar planet known as OGLE-2005-BLG-390L b is likely the coldest alien world. It is about 5.5 times as massive as Earth and thought to be rocky. It orbits a red dwarf star about 28,000 light-years away, making it the most distant exoplanet currently known. [Full Story]

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A planet called WASP-12b is the hottest planet ever discovered (about 4,000 degrees Fahrenheit, or 2,200 degrees Celsius), and orbits its star closer than any other known world. It orbits its star one every Earth day at a distance of about 2 million miles (3.4 million km). WASP-12b is a gaseous planet, about 1.5 times the mass of Jupiter, and almost twice the size. It is 870 light-years from Earth. [Full Story]

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Astronomers are finding many worlds now in a category of worlds called Super-Earths, which are between 2 and 10 times the mass of our own Earth. Some scientists think such worlds could be more susceptible to forming the conditions for life because their cores are hot and would be conducive to geological upheaval through volcanism and plate tectonics. [Full Story]

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The oldest known planet is a primeval world 12.7 billion years old that formed more than 8 billion years before Earth and only 2 billion years after the Big Bang. The discovery suggested planets are very common in the universe and raised the prospect that life began far sooner than most scientists ever imagined. [Full Story]

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The youngest exoplanet yet discovered is less than 1 million years old and orbits Coku Tau 4, a star 420 light-years away. Astronomers inferred the planet’s presence from an enormous hole in the dusty disk that girdles the star. The hole is 10 times the size of Earth’s orbit around the Sun and probably caused by the planet clearing a space in the dust as it orbits the star.

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A planet lighter than a ball of cork is one of the puffiest alien planets known to date. Called HAT-P-1, the planet is about half as massive as Jupiter but about 1.76 times wider-or 24 percent larger than predicted by theory. It could float in water, if there was a tub large enough to hold it. [Full Story]

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While Neptune has a diameter 3.8 times that of Earth and a mass 17 times Earth’s, the new world (named HAT-P-11b) is 4.7 times the size of Earth and has 25 Earth masses. The newfound world orbits very close to its star, revolving once every 4.88 days. As a result, it is baked to a temperature of around 1100 degrees F. The star itself is about three-fourths the size of our Sun and somewhat cooler. [Full Story]

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Most planets orbit in a plane that corresponds to their parent star’s equator. But XO-3b orbits with a crazy tilt of 37 degrees from its star’s equator. The only other known example of such an oddly angled orbit was Pluto, until its demotion to dwarf planet status. There is, however, a planet known to orbit backwards around its parent star. [Full Story]

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SWEEPS-10 orbits its parent star from a distance of only 740,000 miles, so close that one year on the planet happens every 10 hours. The exoplanet belongs to a new class of zippy exoplanets called ultra-short-period planets (USPPs), which have orbits of less than a day. [Full Story]

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The extrasolar planet GJ 1214b is a rocky planet rich in water that sits about 40 light-years away. It orbits a red dwarf star. It is the only known “Super-Earth” exoplanet — worlds that have masses between Earth and Neptune — with a confirmed atmosphere. The planet is about three times the size of Earth and about 6.5 times as massive. Researchers think it is likely a water world with a solid center. [Full Story]

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Astronomers have been able to detect the atmospheres around several exoplanets, including HD 189733b – one of the first alien words to have its atmosphere sniffed to determine its composition. Glowing methane, which can be produced naturally or be a biological byproduct, has been detected on the planet. [Full Story]

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When astronomers observed WASP-18b, they may have seen it in the cosmic moment before its death. This planet, possibly an ill-fated world, whips around its star in less than one Earth day. Scientists think that this speed coupled with the planet’s heft yields strong gravitational tugs that can alter the planets orbit. If the planet orbits faster than its star spins, it should gradually be moving inward towards its sun, and its doom. [Full Story]

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One of the several planets within the Gliese 581 star system, called Gliese 581 d, may be one of the most potentially habitable alien worlds known. It is about 8 times the mass of Earth, and located in an orbit just right for liquid water to exist on the surface. Water is a key ingredient for life as we know it. Gliese 581 is a red dwarf star 20.5 light-years from Earth [Full Story]

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One of the densest exoplanet to date is a world known as COROT-exo-3b. It is about the size of Jupiter, but 20 times that planet’s mass, making it about twice as dense as lead. Scientists have not ruled out that the COROT-exo-3b may be a brown dwarf, or failed star. [Full Story]

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Here’s some bling on an astronomical scale: A Jupiter-mass planet orbiting the newly discovered pulsar PSR J1719-1438 is likely one gigantic diamond. The planet’s ultra-high pressure has caused the carbon within it to crystallize into diamond, researchers say. And the weirdness doesn’t stop there. The planet was probably once a star, but most of its mass was sucked off by its tiny pulsar companion, which is spinning at a rate of 10,000 revolutions per minute. It is 4,000 light-years from Earth. [Full Story]

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The distant exoplanet TrES-2b, shown here in an artist’s conception, is darker than the blackest coal. This Jupiter-sized world reflects less than one percent of the light that falls on it, making it blacker than any planet or moon in our solar system. It is 750 light-years from Earth. [Full Story]

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Courtesy / Credit / Sources : Credit: ESO, L.Calcada, Jeffrey Hall, Lowell Observatory, G.F. Benedict (University of Texas, Austin), JPL’s Planetquest/Caltech, Frederic Pont, Geneva University Observatory,  H. Richer (U. British Columbia), David A. Aguilar, Harvard-Smithsonian Center for Astrophysics,  David A. Aguilar, CFA,  G. Bacon (STScI), A. Schaller (for STScI), G. Tinetti, CARREAU,ESA, Nature, OAMP, Swinburne Astronomy Productions, Space.com and NASA

Documentary : How Universe Works?

Courtesy: Wikipedia & Discovery Channel

How the Universe Works is a mini-series that originally aired on the Discovery Channel April 25, 2010 to May 24, 2010. The first season was narrated by Mike Rowe and the second by Erik Todd Dellums. Taking us to a journey about Black Holes, Black Holes, Alien Galaxies, Extreme Stars, Supernovas, Alien Solar Systems and Alien Moons.

Have you ever wondered exactly how our Universe is put together? How is it built? And how it actually works? This is the ultimate guide to the Cosmos will show as never before the inner workings of our planet, the Solar System, the galaxies and the Universe itself.

This series investigates the nuts and bolts of our cosmos, exploring a whole range of fascinating celestial phenomena and how they came to be the way they are. Experts and mind-blowing CGI, take viewers under the celestial hood to tell the greatest story of all – the story of how we and everything around us began.

Big Bang. A detailed explanation of the Big Bang Theory. Professor Michio Kaku & other colleagues explain what happened billionths of a second after the BB through to what might happen at the universe’s end.

Black Holes. The origins of one of the most mysterious forces in the Universe, Black Holes. How Black Holes are instrumental in the evolution of the Universe itself and how Black Holes can destroy whole galaxies or create them. It also covers Hypernovas, Gamma Ray bursts, Super Massive Black Holes and Quasars.

Alien Galaxies. In this episode scientists like Michio Kaku talk about the estimated 200 billion galaxies in the known Universe and explains where galaxies came from, how they work, what’s their future and how they will die.

Extreme Stars. Michio Kaku explains the different types, how they are born, what they are made of, how they will die and find out how all life & matter in the Universe as we know it owes its existence to the stars.

Supernovas. Different types of supernovas, what the secret ingredient is that gives a star the power to supernova and why all matter in the universe owes its existence to them.

Extreme Planets. The different types, why there are different types, how they are formed, how many scientists have discovered and what makes them so different when they are made out of the same star stuff. Find out what makes the Earth so unique and what the theory is behind a gas giant magnetic field.

Alien Solar Systems. See actual pictures of the solar system being born, see our solar system from its start to its inevitable end and learn about why Neptune & Venus seem out of place and the theory of how they came to be where they are today.

Alien Moons. The secret worlds of our solar system. Discover where other life may exist and how, where the largest eruptions take place, where are the largest oceans and the coldest temperatures. Find out why each moon has its own personality and how they help stabilize the planet they orbit. One of the most puzzling questions of all is answered, why does Saturns moon Tritan orbit backwards and what is its destiny?

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Courtesy : Wikipedia, Discovery Channel, YouTube and Google.