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Distant Universe

Drone said:
Using the Subaru Telescope, a team of Japanese astronomers has discovered the most distant protocluster of galaxies ever found - one that existed less than one billion years after the Big Bang. The astronomers were able to directly observe this cluster of galaxies at an early stage in galaxy evolution, when structures were beginning to form in the early Universe. This discovery will be an important step on the way to understanding structure formation and galaxy evolution.

1-subarutelesc.jpg


Objects circled in red are galaxies 12.7 billion light-years away.

Awesome news. Such structures are very faint and rare. This structure is less than 1 billion years younger than Big Bang.

http://phys.org/news/2012-05-subaru-telescope-distant-protocluster-galaxies.html
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Here we are 7 years after the first post and now we've discovered a galaxy 13.2 BYO, another 500 million years back in space-time.
https://www.space.com/30170-most-distant-galaxy-discovered.html
 
JovHinner123 said:
LOL that's one way to say it :rockout:
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That'is only way for non scholar enthusiast like myself .I am happy for them nerds , everyone deserves win once in a while ;)
 
Drone said:


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Imagine being a sentient life form witnessing the end of the Universe.

I heard a scientist say that the universe is infinite and it's so infinite that it will expand and contract so many times over trillions upon trillions upon trillions of years that everything that was or could have been will be.
That's an intense thought..
I could have made this very post countless times since the beginning of eternity.
 
@jmcslob many scenarios are possible, so many theories to check but if something is infinite it doesn't automatically mean that it can have everything. For example Penrose tiling is infinite but it never repeats or in Goodstein's theorem natural numbers can get insanely big but eventually collapse to zero.
 
lexluthermiester said:
"..print out Chuck Norris copies to take care of the dinosaur problem, very unsettling.." Good stuff!
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yeah I really love this guys youtube, his voice is interesting too, unique. thanks for recommending him! I actually have been watching a lot of his backlog videos too, they are fascinating. well informed too, not just some armchair guy, he really takes it serious and you can tell its his passion.
 

Rare 'recurrent nova' visible to unaided eye in the constellation Ophiuchus​


  • RS Ophiuchi (RS Oph) is a recurrent nova system, located about 5 000 light-years away from Earth, with a recurrence rate of about 15 - 20 years.
  • Its last outburst took place in 2006.
The 2021 outburst was spotted by Keith Geary from Ireland at 21:55 UTC on August 8, when the brightening increased from magnitude +12 to +5 -- about 600-fold.

On August 10, variable star observer Filipp Romanov of Yuzhno-Morskoy, Russia, reported the magnitude has increased further to +4.6.

watchers.news

Rare ‘recurrent nova’ visible to unaided eye in the constellation Ophiuchus

A rare 'recurrent nova' event is visible to the unaided eye in the constellation of Ophiuchus this week. RS Ophiuchi (RS Oph) is a recurrent nova system, located about 5 000 light-years away from…
watchers.news watchers.news
 
Saw this and thought it fit in well here.
I would love to see a Supernova in my lifetime
 
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lexluthermiester said:
I would love to see a Supernova in my lifetime
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Might Happen sooner than you think
"Quote"
A star is born! If you’ve followed my column, you may recall me saying that a new star will appear in the night sky.
This is exciting space news and worth sharing with more sky watch enthusiasts.
In 2022—only a few years from now—an odd type of exploding star called a red nova will appear in our skies in 2022.
This will be the first naked eye nova in decades. And the mechanism behind it is fascinating as well.


This story really begins 10 years ago, when astronomers closely monitored a distant star in Scorpius. This was a double star where the two components were so close together they were actually touching. What was strange is that the orbital period was rapidly decreasing, strongly indicating that the stars might actually merge. Well, it really happened. In 2008, a red nova occurred in that spot, and afterward only one star remained. The two had merged.
Five years earlier, an astronomer predicted that a Red Nova is caused by the merger of stars in a binary system—so the 2008 Scorpius event confirmed that theory.
And now it’s happening again. An astronomy professor at a small U.S. College, along with some of his students, predicted that the double star is just off the right wing tip of Cygnus the swan. From the way the orbit is speeding up from the current 11 hours, that Midwestern astronomer predicts they will merge in the year 2022, give or take half a year. It will be another red nova.


Because this star system is 1800 light years away, which is six times closer than that Scorpius star, the nova should be bright enough to be seen with the naked eye

Source https://www.almanac.com/new-star-night-sky-2022
 
dorsetknob said:
In 2022—only a few years from now—an odd type of exploding star called a red nova will appear in our skies in 2022.
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I think that one was altered after Nasa did some research...
www.discovermagazine.com

Two Stars Won't Collide Into a Red Nova in 2022 After All

We're disappointed, too.
www.discovermagazine.com www.discovermagazine.com

However, I was talking about one of those spectacular, "brighter than a full moon", "so bright you can see it during the day" types of SuperNova.

Red novae are scientifically fasinating, but they are visual non-starters for everyone who doesn't have a 1meter+ telescope.
 
www.nasa.gov

Hubble Reaches New Milestone in Mystery of Universe's Expansion Rate - NASA Science

Completing a nearly 30-year marathon, NASA's Hubble Space Telescope has calibrated more than 40 "milepost markers" of space and time to help scientists
www.nasa.gov www.nasa.gov

Given the large Hubble sample size, there is only a one-in-a-million chance astronomers are wrong due to an unlucky draw, said Riess, a common threshold for taking a problem seriously in physics. This finding is untangling what was becoming a nice and tidy picture of the universe's dynamical evolution. Astronomers are at a loss for an explanation of the disconnect between the expansion rate of the local universe versus the primeval universe, but the answer might involve additional physics of the universe.

To sum it all up, just as I predicted over ten years ago, we actually have no idea about the expansion rate of the universe (the data shows its not true closer to the big bang point now). Just as I also predicted many years ago the Big Bang Theory is mostly incorrect and JWST will probably prove that very soon. How easily scientists yell fact, then how easily they remind the public well facts can change with new data.... hehehe
 
CallandorWoT said:
www.nasa.gov

Hubble Reaches New Milestone in Mystery of Universe's Expansion Rate - NASA Science

Completing a nearly 30-year marathon, NASA's Hubble Space Telescope has calibrated more than 40 "milepost markers" of space and time to help scientists
www.nasa.gov www.nasa.gov

Given the large Hubble sample size, there is only a one-in-a-million chance astronomers are wrong due to an unlucky draw, said Riess, a common threshold for taking a problem seriously in physics. This finding is untangling what was becoming a nice and tidy picture of the universe's dynamical evolution. Astronomers are at a loss for an explanation of the disconnect between the expansion rate of the local universe versus the primeval universe, but the answer might involve additional physics of the universe.

To sum it all up, just as I predicted over ten years ago, we actually have no idea about the expansion rate of the universe (the data shows its not true closer to the big bang point now). Just as I also predicted many years ago the Big Bang Theory is mostly incorrect and JWST will probably prove that very soon. How easily scientists yell fact, then how easily they remind the public well facts can change with new data.... hehehe
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I think you might be misunderstanding what NASA is saying in that article. It's not that we can't confirm that the Universe is expanding, instead it's that we are observing a rate that differs from the rate predicted by General & Special Relativity. Given that G&SR predicts many other things that observations contradict, this is one step further in promoting the fact that G&SR is either flawed or wrong. The Universe continues on it's merry way regardless of our predictions, so either our predictions are wrong or the Universe is misbehaving(BAD Universe, NAUGHTY Universe!!)... Which scenario is more likely?
 
lexluthermiester said:
I think you might be misunderstanding what NASA is saying in that article. It's not that we can't confirm that the Universe is expanding, instead it's that we are observing a rate that differs from the rate predicted by General & Special Relativity. Given that G&SR predicts many other things that observations contradict, this is one step further in promoting the fact that G&SR is either flawed or wrong. The Universe continues on it's merry way regardless of our predictions, so either our predictions are wrong or the Universe is misbehaving(BAD Universe, NAUGHTY Universe!!)... Which scenario is more likely?
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from what I read its a specific section closer to the center of the big bang, and that part is not expanding as much as the math should say it should. imo that is a pretty big flaw.

personally I think the Cosmos is so massive and complicated it requires a bit of hubris for any of us to claim we know what is going on in a fact based way.
 
CallandorWoT said:
personally I think the Cosmos is so massive and complicated it requires a bit of hubris for any of us to claim we know what is going on in a fact based way.
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Can't disagree with that point considering that we can not observe what is going on outside our Universe in the Cosmos at large. We can't even observe the rest of what's inside our Universe due to the limitations of lightspeed. There are entire sections of the Universe that we can no longer observe because they have expanded away from us so far that light from those area's of the Universe can never reach us because we are accelerating away from each other at a rate greater than the speed of light. What I'm waiting to see is JWT take an image of a Galaxy on the very edge of our observational range fade from view as it moves beyond our observational range, never to be seen again. That will be an interesting day.
 
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W1zzard said:
current data suggests that the universe is flat, there is a certain amount of measuring error, which could mean that the universe is just really really big, so the local curvature we see is too small to detect it (like the earth looks flat to you).

expanding universe means the space _between_ galaxies expands. objects that are gravitationally bound like our whole galaxy, the atoms of the earth, the atoms in your body, their electrons, do not move apart from each other.

a popular example to illustrate expanding universe is a balloon with dots painted on it (galaxies), and the balloon gets inflated, so the space between all points expands. a more accurate representation would be to glue some colored paper dots on it (so those won't expand)
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In the next update of the simulation it will be 3D.
It's same like the old games where the background was just 2D texture.
 
voyager.jpl.nasa.gov

Voyager Stories - NASA Science

Stay up-to-date with the latest content from the Voyager mission team as the spacecraft travel farther into interstellar space.
voyager.jpl.nasa.gov voyager.jpl.nasa.gov

Speaking of things far away

Maybe Voyager 1 has reached the edge of our simulation
 
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