Nerd Mentality

MajinbuuX105

i believe our sun will not expend, it will just collapse

All stars go through some sort of expansion stage when the hydrogen supply gets critical. It expands once it starts burning more helium then hydrogen.
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MajinbuuX105

i believe our sun will not expend, it will just collapse

No, At least not according to scientists, It will turn into a Red giant and after a few million years it will collapse.

And Xavius why dont you bring in "Christian perspective"
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I believe that banking institutions are more dangerous to our liberties than standing armies. If the American people ever allow private banks to control the issue of their currency, first by inflation, then by deflation, the banks and corporations that will grow up around [the banks] will deprive the people of all property until their children wake-up homeless on the continent their fathers conquered. The issuing power should be taken from the banks and restored to the people, to whom it properly belongs. -Thomas Jefferson,

Astronomers Identify Trio of Supergiant Stars

Mon Jan 10,12:24 PM ET

Add to My Yahoo! Science - Reuters

By Deborah Zabarenko

SAN DIEGO (Reuters) - A trio of supergiants -- red, cool, bright stars at the end of their lives -- may be the biggest stars ever identified, astronomers reported on Monday.

All three have diameters of more than 1 billion miles, or 1,500 times the sun's girth. If they were in the same location as the sun, they would completely engulf Earth and their outer layers would extend to a point between the orbits of Jupiter and Saturn.

The big three dwarf even Betelgeuse, a well-known supergiant and the brightest star in the constellation Orion, the team of scientists said in research presented at the annual meeting of the American Astronomical Society meeting in San Diego.

They also are slightly bigger than the previous champion, known as Herschel's "Garnet Star."

Determining their size was more a matter of computer modeling than telescope observing, said one of the researchers, Philip Massey.

An international team of astronomers, including Massey, looked at a field of 74 supergiant stars to try to learn more about them. The scientists knew the stars' distance from Earth, and they knew how bright they were, but they didn't know just how cool they were.

In the case of stellar temperatures, cool is a relative term. These stars are around 5,600 degrees Fahrenheit. The sun is nearly 10,000 degrees F and the hottest known stars are more than 90,000 degrees F.

Knowing the temperature was important, Massey said, because a fundamental law of stellar physics holds that a star's brightness is proportional to its temperature and size. By knowing two of these numbers, scientists could find out the third with precision.

The team used new computer models that have improved data on molecules in the outer layers of these big stars, and found that in fact the trio were about 10 percent warmer than researchers had expected. They were also able to calculate their size, Massey said in a telephone interview from Flagstaff, Arizona, where he works at Lowell Observatory.

"I think the interesting aspect of this is that it tells us the extreme that normal stars can become, how large a normal star of any kind can ever become," Massey said.

All the stars in the study were normal stars, that is, none were two-star pairs known as binaries, whose parameters could be different.

Will this ever happen to our sun? In a word, no.

The sun simply lacks the mass to become a red supergiant, Massey said.

The three big supergiant stars are: KW Sagitarii, which is 9,800 light-years from Earth; V354 Cephei, at 9,000 light-years away; and KY Cygni, 5,200 light-years away.

A light-year is about 6 trillion miles, the distance light travels in a year

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The Dragons are Gone!

Xavius

Can we get a Christian perspective in here? This all sounds like a lot of scientific hogwashery.

God will destroy the universe before the sun reaches the end of it's life. Christiany enough for ya?

Well that's just super. Scientists just discovered 3 excessively big stars and we're currently debating on how our sun will go kablooy 5 billion years from now. N-philes rocks so hardcore.

chronoTras

All stars expand, it will just never become a super red giant like most stars. Just as said before, a yellow super giant. In about 4-5 billion years, it will start expanding, and will stop between us and mars. Mars will become mercury.

actually, the really super hot ones have a nuclear reaction at it's time of death and will explode, causing a super nova, which will or will not cause a black hole.
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The Dragons are Gone!