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Are there radioactive planets in this universe?

I am referring to those made completely out of radioactive elements

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The universe is about 27billion light years wide filled with galaxies around 30000 light years wide there might be a few or millions but not around this solar system

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The universe is 93 billion light years in diameter.
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Probably, they've been finding all kinds of planets out there, even one made completely out of diamonds. If there is one, it has not been discovered yet.

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Not a planet a star 1 trillion carat I think
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Or is it karat whatever
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From Space.com -

*Move over, Hope Diamond. The most famous gems on Earth have new competition in the form of a planet made largely of diamond, astronomers say.

The alien planet, a so-called "super-Earth," is called 55 Cancri e and was discovered in 2004 around a nearby star in our Milky Way galaxy. After estimating the planet's mass and radius, and studying its host star's composition, scientists now say the rocky world is composed mainly of carbon (in the form of diamond and graphite), as well as iron, silicon carbide, and potentially silicates.*

- http://www.space.com/18011-super-earth-planet-diamond-world.html#sthash.WNBcem6K.dpuf
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We both know coal or carbon was life forms so what that means is that planet had life this always bugs me and I'm talking about a star it's with 1 100 trillion karat all diamond
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From NatGeo ...

*There's a star in the sky that sparkles like a diamond—thanks to vast amounts of zirconium in its atmosphere, astronomers have announced.

Dubbed LS IV-14 116, the faint, blue star lies about 2,000 light-years from the sun. Detailed new measurements reveal the star to be the most zirconium-rich known to date, with levels more than 10,000 times higher than those in our sun.

While real diamonds are made of carbon, jewellers make false diamonds out of zirconium dioxide crystals, aka cubic zirconia. The mineral zirconium silicate, or zircon, is also widely used as a gemstone. (Related: "'Diamond Planets' Hint at Dazzling Promise of Other Worlds.")

In addition to zirconium, astronomers studying LS IV-14 116 found chemical signatures for high amounts of three other elements rarely seen in stellar atmospheres: strontium, germanium, and yttrium.*

- http://news.nationalgeographic.com/news/2010/12/101208-fake-diamond-star-zirconium-zirconia-zircon-science-space/

I guess it's both.
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http://news.bbc.co.uk/2/hi/3492919.stm the star I'm talking about
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Don't let your girlfriend read that! haha
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If only I had one
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I'll make sure of it if I get one ill say its fake diamond haha
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All planets contain radioactive material but there are none that are completely radioactive.

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