The long duration of the fusion has disappeared and its furnaces have cooled, our sunglasses will have a giant crystal hanging in the sky.
Astronomers have shown that massive white dwarfs are solid in the metal circles at the beginning of retirement. Apart from poetic descriptions, we can calculate how one of the oldest objects in the universe is to be challenged.
Using data from the European Space Agency of the Gaia satellite, researchers from the United Kingdom, Canada and US have received a 50-year hypothesis, before the end of the crystallization, they spend a lot of stars.
"This is the first direct proof that white dwarfs are crystallized, or liquid or solid transitions," says Pier-Emmanuel Tremblay, a physicist at Warwick University.
"It was planned for fifty years now that the crystallization has seen a number of white dwarves of certain light and color and see what we have seen."
While massive stars are much larger than ours, most of the sun in the universe are the lower masses that see the calmest age.
After a small hydrogen, our stars like the Sun start cooling and hiring. This gives atmospheric energy a short energy that can blow the atmospheric bundle in a huge proportion, through this warming.
In the meantime, its curves continue to slow down, putting helium on the heaviest elements such as carbon and oxygen.
The final result is white dwarf: a sized ball on the ground so compact, 1 cm small3 The part portion will weigh about 10 tonnes.
These hot hearts of deadly stars will eventually be called a frozen creature called black dwarf.
For a long time, it is necessary to think that white dwarfs are cooled down to a few (if applicable) to reach that point. We would look deeply at how we thought about the age of the universe.
But how does a white sword get hot? Internal mechanics make big changes to the surface, how hot it surrounds it, and it has been a long discussion.
Inside the white dwarf, its electrons move freely, nudging the carbon and oxygen nuclei, and the heat becomes more and more crazy.
In theory, about 10 million degrees, there is not enough energy to put the energy out of the nucleus positions out of position. They lock in a place, forming a large crystal structure that releases a lot of energy.
The question is all the time. In small white dwarfs, the crystallization is associated with the process that binds to external layers to facilitate the transfer of heat energy. Once connected, the stars are cooled effectively.
Mysteries are heavier stars. It has been difficult to find evidence of its sequence, both in small white dwarfs, and with less obvious obvious symbols for mass varieties.
The researchers collected more than 15,000 objects, dwarf dwarfs, about 300 light years of Earth. Compared to their masses and their ages, they found that they were more stars than shine and a certain color.
He painted this pattern with theoretical predictions, because the white dwarf of a certain mass came out hot, and the crystallization had preceded the masses of white dwarf with a mass exceeding our own Sun.
"All white dwarfs will crystallize at the time of their evolution, even if the massive white dwarf passes the process earlier," says Tremblay.
"This means that our galaxy has finished white millions of white and crystalline spheres in the sky."
By reaffirming this model, some of the most common objects in Milky Way have aging problems.
The white dwarf can crystallize the heat, prevents the cooling process and the aging process lasts for 2 million years.
Not only did researchers find crystallization sets in heavy dwarf clouds, when heat was lost more than expected.
"We believe that oxygen is crystallizing first and then sinking to the chain, similar to sedimentation on the Earth's edge," says Tremblay.
For astronomers, this discovery offers observations that help the stars change our horizons to the Sun, which offers a much better idea of our galaxy evolution.
The rest look at the cosmos and appreciate it among the windshields, there are more gems than imagined.
This study was published Nature.