In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Q: A giant rocky planet roughly twice the size of Earth and with nearly 20 times as much mass has been spotted in orbit around a faraway star. The planet is the first to be classed as a "mega-Earth" – an alien world that dwarfs the other rocky planets known to exist outside the solar system. 
  
 Researchers cannot say whether the planet is hospitable to life, but if it has an atmosphere and clouds, the surface could be cool enough for life to survive. 
  
 In line with global rules for naming heavenly bodies, the planet goes by the official name of Kepler-10c. But Dimitar Sasselov, director of the Harvard Origins of Life Initiative, called it "the Godzilla of Earths". 
  
 The discovery has surprised some astronomers because such large planets are thought to draw in hydrogen as they form and become gas giants, which is what happened for Neptune, Saturn and Jupiter. 
  
 "This is a planet that doesn't fit the usual models of planetary formation," said Xavier Dumusque at the Harvard Smithsonian Centre for Astrophysics. 
  
 Scientists reported their first glimpse of Kepler-10c in 2011 when Nasa's Kepler space telescope watched the planet swing across the face of its parent star. But at that time, researchers knew only the size of the planet: around 30,000km wide. 
  
 Speaking at a meeting of the American Astronomical Society in Boston on Monday, Dumusque unveiled fresh measurements taken with instruments on the Italian National Galileo Telescope on La Palma in the Canary Islands. The readings showed that Kepler-10c has a mass a staggering 17 times greater than Earth. 
  
 The new measurements allowed Dumusque and others on the team to work out the average density of the new planet. The answer of 7 grams per centimetre cubed points to an alien world made of rock and water. 
  
 Kepler-10c circles a star much like our own sun about 560 light years from Earth in the northern constellation of Draco, the dragon. A year on the planet lasts 45 Earth days. The surface temperature is estimated to be a toasty 310C, but a cloudy sky could cool the planet considerably, Dumusuqe told the Guardian. 
  
 Another planet, Kepler-10b, orbits so fast and close to the same star that a new year unfolds every 20 hours. 
  
 Dumusque said that the next generation of space and ground-based telescopes will give astronomers the ability to analyse the atmospheres of planets outside the solar system. Those measurements could suggest which planets could be habitable and even inhabited. 
  
 The solar system containing Kepler-10c formed around 11bn years ago, or three billion years after the big bang that flung the universe into being. 
  
 "Finding Kepler-10c tells us that rocky planets could form much earlier than we thought. And if you can make rocks, you can make life," said Sasselov. ||||| Sly Stallone has nothing on this rocky heavyweight. Twice the size of Earth and with 17 times our planet's mass, Kepler-10c is so unusual that it has been placed in a brand new class of exoplanet. 
  
 Kepler-10c was discovered in 2011 by NASA's Kepler space telescope. The planet orbits a star that is about 560 light years away from us. It has a radius slightly more than double that of Earth's – a size that led astronomers to assume it was a shrunken version of gassy planet Neptune, which is four times larger than Earth. 
  
 Now Xavier Dumusque of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, and his colleagues have used the HARPS-N telescope in the Canary Islands to pin down Kepler-10c's mass. They found it is actually 17 times as heavy as Earth: more or less the same mass as Neptune. But because Kepler-10c is much smaller then Neptune, it must be an incredibly dense, rocky world, the like of which has never been seen before. 
  
 "All the major existing planetary formation models were not predicting this type of planet, and it is why we could not believe our result at the beginning," says Dumusque, who presented the findings at the American Astronomical Society meeting in Boston this week. But the team checked for a bevy of possible errors that might have been caused by the telescope itself or by activity from the host star, and they say a massive rocky world is the best explanation for the data. 
  
 World class 
  
 Calculations by geophysicists previously suggested that gravity should compress planets so much that rocky worlds can't get bigger than twice Earth's size, says Kepler team member Geoff Marcy at the University of California, Berkeley. "This suggestion of a rocky planet 2.3 times the size of Earth blows me away," he says. 
  
 The team has dubbed Kepler-10c a "mega-Earth", because it is too heavy to fit into the super-Earth class of exoplanets, which are bigger than our home world but much lighter than Neptune. It is probably made from the same materials as Earth – water, silicates and iron – but in different proportions, says Dumusque. 
  
 "Kepler-10c is denser than Earth, but still it is far from being made of pure iron, which would be the physical limit for planets," he says. 
  
 Neighbouring planet Kepler-10b was already famous among planet hunters for being the first confirmed rocky world outside our solar system. But it is very close to its star, completing a full orbit in just 20 hours. "The more we find planets outside the solar system, the more we are surprised by the diversity of these new worlds," says Dumusque. 
  
 If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to. ||||| An artist's illustration of the mega-Earth planet Kepler-10c, the"Godzilla of Earths" planet that is 2.3 times the size of Earth and 17 times heavier. The planet and its lava-world sibling Kepler 10b (background) orbit the star Kepler-10 about 570 light-years from Earth, in the constellation Draco. Image released June 2, 2014. 
  
 BOSTON — Scientists have just discovered the "Godzilla of Earths" — a new type of huge and rocky alien world about 560 light-years from Earth. 
  
 Dubbed a "mega-Earth," the exoplanet Kepler-10c weighs 17 times as much as Earth and it circles a sunlike star in the constellation Draco. The mega-Earth is rocky and also bigger than "super-Earths," which are a class of planets that are slightly bigger than Earth. 
  
 Theorists weren't actually sure that a world like the newfound exoplanet could exist. Scientists thought that planets of Kepler-10c's size would be gaseous, collecting hydrogen as they grew and turning into Jupiter-like worlds. However, researchers have now found that the newly discovered planet is rocky, Christine Pulliam, a spokeswoman with the Harvard-Smithsonian Center for Astrophysics, wrote in a statement announcing the find. [The Strangest Alien Planets Ever Found (Gallery)] 
  
 "This is the Godzilla of Earths!" the CfA's Dimitar Sasselov, director of the Harvard Origins of Life Initiative, said of Kepler-10c in a statement. "But unlike the movie monster, Kepler-10c has positive implications for life." 
  
 The discovery of Kepler-10c was presented today here at the 224th American Astronomical Society meeting. 
  
 The mega-Earth orbits its parent star once every 45 days. Kepler-10c is probably too close to its star to be hospitable to life, and it isn't the only orbiting the yellow star. Kepler-10 also plays host to a "lava world" called Kepler-10b that is three times the mass of Earth and speeds around its star in a 20-hour orbit. 
  
 NASA's Kepler space telescope first spotted Kepler-10c, however, the exoplanet-hunting tool is not able to tell whether an alien world it finds is gaseous or rocky. The new planet's size initially signaled that it fell into the "mini-Neptune" category, meaning it would have a thick envelope of gas covering the planet. 
  
 CfA astronomer Xavier Dumusque and his team used the HARPS-North instrument on the Telescopio Nazionale Galileo in the Canary Islands to measure Kepler-10c's mass. They found that the planet is, in fact, rocky and not a mini-Neptune. 
  
 "Kepler-10c didn't lose its atmosphere over time. It's massive enough to have held onto one if it ever had it," Dumusque said in a statement. "It must have formed the way we see it now." 
  
 Scientists think the Kepler-10c system is actually quite old, forming less than 3 billion years after the Big Bang. The system's early formation suggests that, although the materials were scarce, there were enough heavy elements like silicon and iron to form rocky worlds relatively early on in the history of the universe, according to the CfA. 
  
 "Finding Kepler-10c tells us that rocky planets could form much earlier than we thought," Sasselov said in a statement. "And if you can make rocks, you can make life." 
  
 The new finding bolsters the idea that old stars could host rocky Earths, giving astronomers a wider range of stars that may support Earth-like alien worlds to study, according to the CfA. Instead of ruling out old stars when searching for Earth-like planets, they might actually be worth a second look. 
  
 It's also possible that exoplanet hunters will find more mega-Earths as they continue searching the universe. CfA astronomer Lars A. Buchhave "found a correlation between the period of a planet (how long it takes to orbit its star) and the size at which a planet transitions from rocky to gaseous," meaning that scientists could find more Kepler-10c-like planets as they look to longer period orbits, according to the CfA. 
  
 Follow Miriam Kramer @mirikramer and Google+. Follow us @Spacedotcom, Facebook and Google+. Original article on Space.com. |||||
A: 
Kepler-10c is a big, rocky planet that may harbor life—but what's most interesting is how big and rocky it is, Space.com reports. An exoplanet about 560 light-years away in the constellation Draco, Kepler-10c was spotted in 2011 and assumed to be gaseous because of its size. But closer inspection showed it was heavy—17 times more than Earth—which meant it was rocky, a development that shocked geophysicists who assumed rocky planets were kept smaller by the compression of gravity, reports New Scientist. "This suggestion of a rocky planet 2.3 times the size of Earth blows me away," said a Kepler team member. Kepler-10c is also quite old, dating back to about 3 billion years after the Big Bang—a fact that should expand our search for extra-terrestrial life. "Finding Kepler-10c tells us that rocky planets could form much earlier than we thought. And if you can make rocks, you can make life," said a Harvard astronomer who dubbed the planet "Godzilla of Earths." So is it liveable? Only if there's an atmosphere and clouds to cool things down, because the planet's surface temperature should otherwise be a sizzling 590 Fahrenheit, the Guardian reports. (For more planetary news, read about water vapor spotted on a tiny planet in our solar system.)