From Hubble:
Galaxies

Astronomers using data from the NASA/ESA Hubble Space Telescopes and other telescopes have performed an accurate census of the number of galaxies in the Universe. The group came to the surprising conclusion that there are at least 10 times as many galaxies in the observable Universe as previously thought

No life out there? It's impossible, i think

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It does seem unlikely that we are alone, but only time will tell.

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Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.

I think the main problem is distance. There may be many instances of life. Some microbial, some just learning to make tools, and some already extinct as well as every mix in between. The distances are just overwhelming.

Steve

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Warning, addicted to SETI crunching!
Crunching as a member of GPU Users Group.
GPUUG Website

It does seem unlikely that we are alone, but only time will tell.

The most un-comforting thought is that we may never know.

What we could ever "see" in the universe is just a small portion of the whole, because of the cosmological horizons.

It is not really easy to understand but those links can help.

Observable universe: https://en.wikipedia.org/wiki/Observable_universe
List of cosmological horizons: https://en.wikipedia.org/wiki/List_of_cosmological_horizons

http://www.cnn.com/2016/10/11/health/interstellar-travel-space-physics/

Steve

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Warning, addicted to SETI crunching!
Crunching as a member of GPU Users Group.
GPUUG Website

What, if any, light (pun?) does this shed on expected amounts of visible matter and energy versus dark?

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Capitalize on this good fortune, one word can bring you round ... changes.

Does it matter (pun again?) :)

"The results have clear implications for our understanding of galaxy formation"
It is from my understanding that in order to that galaxy formation occurs, dark matter and something more than ordinary matter have to exist giving the extra gravitational pull.

The findings seems only to reduce the expected amounts of exotic matter.
But not enough.
Scientists still have to explain the exotic matter needed.

I think live is so far away the only way we will ever know is if Seti detects signal, but we will not contact them the signal will take to long to get there as the signal we receive will have taken many years to get here.

If there is no way to work around the speed of light for human space travel then we will only be able to make one way trips to the nearest stars. We will probably get very proficient at travelling around our own solar system but interstellar travel will remain in the realm of science fiction.

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Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.