Topic: Universe | |
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Edited by
smiless
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Tue 11/03/09 09:21 AM
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It is estimated that there are 1022 stars in total in the universe.
huh? I looked back and it is 10 then tiny 22 above it. I guess Mingle2 doesn't allow us to do this. So just see 10 and to the right of that number 22 floating above it as small numbers. |
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While astronomers used to believe that galaxies were distributed more or less evenly through space, they have now found regions where galaxies are rare or absent. The largest of these regions is located in the direction of the constellation Bootes, and measures more than 300 million light years across.
The matter in the universe is so thinly dispersed that the universe can be compared with a building twenty miles long, twenty miles wide, and twenty miles high, containing only a single grain of sand. The term "Big Bang" started as a putdown. In the 1940's, there were many competing theories about the nature of the universe. British astrophysicist Fred Hoyle coined the term "Big Bang" as a snide putdown of his competitors, only to have the term find its way into the general consciousness as the description of the correct theory. A massive star has a shorter lifetime than a less massive star. The more massive a star, the more tightly its gravity pulls it together, the hotter it must be to keep it from collapsing, and the more rapidly it uses up its hydrogen fuel. The reason there are so few really massive stars is that they do not live very long, as little as a million years. For comparison, our sun has an expected lifetime of about 11,000 million years. |
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It is estimated that there are 1022 stars in total in the universe.
huh? I looked back and it is 10 then tiny 22 above it. I guess Mingle2 doesn't allow us to do this. So just see 10 and to the right of that number 22 floating above it as small numbers. Just for information, if you can't type ten to the twenty second power using superscripts, it is indicated by 10**22. The two asterisks mean "to the power of", one asterisk means "times" like 10*22=220. 10**22 is a very very big number (10x10x10... twenty two times). |
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It is estimated that there are 1022 stars in total in the universe.
huh? I looked back and it is 10 then tiny 22 above it. I guess Mingle2 doesn't allow us to do this. So just see 10 and to the right of that number 22 floating above it as small numbers. Just for information, if you can't type ten to the twenty second power using superscripts, it is indicated by 10**22. The two asterisks mean "to the power of", one asterisk means "times" like 10*22=220. 10**22 is a very very big number (10x10x10... twenty two times). Good to know! Thanks for the info. |
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Edited by
SkyHook5652
on
Tue 11/03/09 11:36 AM
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It is estimated that there are 1022 stars in total in the universe. huh? 10*22=220. 10**22 is a very very big number (10x10x10... twenty two times). I've also seen the circumflex (^) used for that same thing, as in 1*10^5. I guess either one can work, depending on the cultural circumstances. |
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It is estimated that there are 1022 stars in total in the universe. huh? 10*22=220. 10**22 is a very very big number (10x10x10... twenty two times). I've also seen the circumflex (^) used for that same thing, as in 1*10^5. I guess either one can work, depending on the cultural circumstances. That will work. Well if I ever encounter such numbers again, I will make sure to put those little asterix next to them. |
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