Sunday, 24 March, 2019

Our sun ‘is going to turn into a crystal sphere’

The Sun Will Turn Into a Giant Crystal Ball After It Dies New study suggests ancient stars form crystal cores
Elijah Vega | 11 January, 2019, 21:15

Astronomers have discovered that billions of stars across space are turning into massive crystals.and the sun could be next!

ESA's Gaia satellite has observed dead stars that are the first direct evidence of an extraordinary phenomenon predicted 50 years ago.

Years after our star's fusion has faded away and it would have cooled down, the Sun would become a solid crystal after its death, joining the billion of such space bodies, scattered all over the Universe.

White-dwarf crystallization is akin to water freezing from liquid to ice. That means that billions of white dwarfs in our galaxy have already completed the process and are essentially crystal spheres in the sky.

Stars like our sun can turn into crystals in the final stages of their lives, bringing a whole new meaning to those glittering jewels in the sky.

They identified a pile-up, an excess in the number of stars at specific colors and luminosities that do not correspond to any single mass or age. To put that in perspective: A mere teaspoon of white-dwarf material would weigh about as much as an elephant, if you could somehow transport the stuff to our planet.

Just like any other fluid that solidifies in cold enough temperatures, so will those liquified nuclei will when temps in the core cool down enough and releases enough for them to crystallize.

US, China leave next steps for trade talks unclear
From January 7 to 9, a USA delegation was in Beijing for talks about trade issues amid an ongoing 90-day truce in the trade war. The talks were the first face-to-face meeting between the two sides since their leaders met on December 1.

This diagram, known as Hertzsprung-Russell diagram, combines information about the brightness, color and distance of more than 15,000 white dwarfs within 300 light-years of Earth. It is estimated that in some cases these stars have slowed down their aging by as much as 2 billion years, or 15 percent of the age of our galaxy.

"All white dwarfs will crystallise at some point in their evolution, although more massive white dwarfs go through the process sooner".

Scientists further reveal that this crystallisation lasts for several billion years, and the heat released during the process slows down the evolution of the white dwarfs.

When such stars expire after consuming all their fuel, they shed their outer layers and become dense white dwarf stars.

Over the next five billion years it will cool down - in the process first expanding into a "red giant" - then shrinking down to a white dwarf and gradually harden and solidify.

Dr Tremblay adds: "Not only do we have evidence of heat release upon solidification, but considerably more energy release is needed to explain the observations". They believe that the missing energy could be released in the form of gravitational energy, created as carbon is pushed to the surface of the star by falling oxygen that had crystallized earlier in the process.

The interior of a "crystal orb" white dwarf. "This experiment on ultra-dense matter is something that simply can not be performed in any laboratory on Earth".

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