In my opinion, yes. There are at least 10 billion trillion Earth-like planets in the observable universe.
Yes. There are at least 90 billion trillion or more planets in the observable universe.
They can't. The universe is only about 13 billion years old. If there are galaxies a trillion light years away their light has not reached us yet and due to the expansion of the universe, never will. At the edge of what we call the observable universe we cannot make out individual stars, but we can detect galaxies using infrared telescopes.
If you counted 1 number per second, it would take 4000 trillion months (320 trillion years) to count all 10 billion trillion stars (100 billion per galaxy) in a fictitious version of our universe.
If you counted at the rate of one number per second, it would take 320 trillion years to count to 10 billion trillion. It makes no difference WHAT you're counting.
There are more than 10 billion trillion Earth-like planets (100 billion+ per galaxy/1 or 2 per star) in the universe, and estimates may vary.
Yes. There are at least 90 billion trillion or more planets in the observable universe.
The observable universe is estimated to contain 200 billion to 2 trillion galaxies
Unlikely, because that number is only someone's estimate.
WikiSky will not map all 100 billion galaxies in the observable universe
1,000,000,000,000,000,000,000 = 1021 = 1 sextillion
Unlikely, because that number is only someone's estimate.
No, because it will be impossible for astronomers to get all 100 billion redshifts for all 100 billion galaxies in the observable universe.
It is possible that astronomers will measure all the sizes of 100 billion galaxies in the observable universe.
There are an estimated 1011 (100 billion) galaxies in the observable Universe. It is not known how much bigger the Universe is, compared to the observable part.
Yes, all 100 billion galaxies in the observable universe up to 13.5 billion light-years away.
No, because it will be impossible for the PGC catalogue to list all 100 billion galaxies in the observable universe.
No. Because it will be impossible for astronomers to make an atlas of at least 100 billion galaxies in the observable universe.