For really heavy elements, such as uranium, such fission happens spontaneously.
Instead, these giants may simply have dumped all their contents back into space, dispersing heavy elements like iron equivalent to the mass of 10 of our Suns.
Planets, on the other hand, will be richer in heavy elements than the star they orbit, since there were fewer light elements left over by the time they formed.
And these heavy elements are very important for making stars, because they allow the hydrogen and the helium to clump together, and collapse into stars then, and start to shine.
Our sun is enriched with heavy elements, with metals, and oxygen, and so forth, that have to have been made inside another star that died before our sun and our solar system formed.
But some theorists believe that when it is possible, they will be able to determine how a particular object formed by comparing its spectrum with that of its parent star to determine the relative proportions of heavy elements in the two bodies.
Since it is known that stars in small galaxies have fewer heavy elements than stars in big ones, it is plausible that these stellar oddballs are, indeed, stars that have dropped in from what was once a small neighbour of the Milky Way.
And lead is about as heavy as it gets before elements become routinely radioactive and thus inappropriate for all but specialised applications.
In addition to income and hiring outlook, they look at the work environment, including hazards like toxic fumes or exposure to the elements, physical demands like heavy lifting, and stress factors including deadlines, competitiveness and travel.
Rare earth elements are a group of 17 heavy metals, which despite their name, are not particularly rare.
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The works, made of bronze, heavy steel and mirrors, actually seem enhanced by their exposure to the elements.
This requires the government to carry the heavy burden of persuading the trier of fact that beyond a reasonable doubt that the elements of the crime are proved.
These are by far the most technologically advanced elements of an airframe and they were outsourced to a Japanese consortium led by Mitsubishi Heavy Industries.
Annan said Syria's foreign minister told him that heavy weapons and troops had been withdrawn from population centers and that military operations had ended, key elements of the peace plan.
Annan said earlier Syria's foreign minister told him that heavy weapons and troops had been withdrawn from population centers and that military operations had ended, key elements of the peace plan.
"Since last Tuesday, the Iraqi Security Forces have been conducting cordon and strike operations against criminal elements across Basra, supported by efforts to encourage militias to give up their medium and heavy weapons, " he said.
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