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Number of galaxies in the universe!
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GoldenRod
10 years on LIF!
Member since 11/06 26792 total posts
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Shawn
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Number of galaxies in the universe!
http://gizmodo.com/we-were-very-wrong-about-the-number-of-galaxies-in-the-1787750693?utm_medium=sharefromsite&utm_source=Gizmodo_facebook
Using the Hubble Space telescope and other observatories, astronomers have completed the most accurate census of galaxies in the observable universe to date. In terms of the actual number, let’s just say we were way the hell off.
The observable universe—that is, the part of the universe that’s visible to us on Earth—contains 10 to 20 times as many galaxies than previous estimates. That raises the total to somewhere between one and two trillion galaxies, which is up from the previous best estimate of 100 billion galaxies. Consequently, this means we also have to update the number of stars in the observable universe, which now numbers around 700 sextillion (that’s a 7 with 23 zeros behind it, or 700 thousand billion billion).
And that’s just within the observable universe. Because the cosmos emerged some 13.8 billion years ago, we’re only able to observe objects up to a certain distance from Earth. Anything outside this “Hubble Bubble” is invisible to us because the light from these distant objects simply haven’t had enough time to reach us. It’s difficult—if not impossible—to know how many galaxies reside outside this cosmological blind spot.
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That's why I believe, mathematically, that there has to be other life in the universe. Probably so far away that we'll never encounter them, or even signals from them, but I think there has to be a lot of planets with life on them...
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Posted 11/17/16 8:29 AM  |
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Hofstra26
Love to Bake!
Member since 7/06 27915 total posts
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Re: Number of galaxies in the universe!
Posted by GoldenRod
http://gizmodo.com/we-were-very-wrong-about-the-number-of-galaxies-in-the-1787750693?utm_medium=sharefromsite&utm_source=Gizmodo_facebook
Using the Hubble Space telescope and other observatories, astronomers have completed the most accurate census of galaxies in the observable universe to date. In terms of the actual number, let’s just say we were way the hell off.
The observable universe—that is, the part of the universe that’s visible to us on Earth—contains 10 to 20 times as many galaxies than previous estimates. That raises the total to somewhere between one and two trillion galaxies, which is up from the previous best estimate of 100 billion galaxies. Consequently, this means we also have to update the number of stars in the observable universe, which now numbers around 700 sextillion (that’s a 7 with 23 zeros behind it, or 700 thousand billion billion).
And that’s just within the observable universe. Because the cosmos emerged some 13.8 billion years ago, we’re only able to observe objects up to a certain distance from Earth. Anything outside this “Hubble Bubble” is invisible to us because the light from these distant objects simply haven’t had enough time to reach us. It’s difficult—if not impossible—to know how many galaxies reside outside this cosmological blind spot.
...
That's why I believe, mathematically, that there has to be other life in the universe. Probably so far away that we'll never encounter them, or even signals from them, but I think there has to be a lot of planets with life on them...
ITA with you!!! To think we're the ONLY planet in millions of galaxies that managed to sustain life seems narrow minded. I absolutely think life exists elsewhere, not little green men types, but life of some sort.
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| Posted 11/17/16 8:32 AM |
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Number of galaxies in the universe!
Maybe a parallel universe ! Lol
Remember the Seinfeld episode where Elaine makes some new friends but everything is just a little bit different… Like the Kramer in the new circle actually knocks on the door. 
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| Posted 11/17/16 8:46 AM |
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