New Map of the Universe Hints That Dark Energy May Be Evolving | NOVA | PBS
2024 ж. 17 Мам.
17 083 Рет қаралды
An international group of astronomers have announced a hint that could fundamentally change what we think we know about the universe-and how we think it might come to an end.
Calling all NOVA superfans to join our new community! Get access to exclusive content, badges, emojis and more:
/ @novapbs
Follow on social for more NOVA content
Twitter: / novapbs
Instagram: / novapbs
TikTok: / novapbs
very exciting
Wow. So many people have a negative view of "Dark Energy".....
Future Power source.. just build a Dark Matter conversions device 🎉
We are here, we are listening! We know everything! We are unshakeable!!!
I had a teacher in high school once say that i had a high level of Dark Energy. Kinda makes me wonder...
Nice!
First Comment!
It is unknown whether or not it has a beginning or an end for certain. It just occurred as an event from the randomness of the cosmos.
Makes my head hurt!
I wish the narrator used a microphone with less treble - even if this is an accurate recording of his voice.
I agree, he sounds like an 8th grade nerd talking about his pokemon collection... 😆
And somehow he still gets more a$$ than you.@@kraneiathedancingdryad6333
This is what we get when you have government run businesses raking in millions of tax dollars, only to hire the best DEI’s with no clue what they are doing. Cheap edits, garbage sound. I see KZhead channels with 1/1000 the budget of this station make quality stuff.
😂😊....maybe artificial intelligence could help 😅
Have you followed the evolution of ‘Sprites’? First spotted in a frame of film from a space vehicle in the 90’s. They are now showing up to the naked eye. What are they doing?
The same things they were doing before. Only now that we know where to find sprites and how, we see more of them. The only thing about them that is evolving is our growing knowledge regarding them.
I love that very ending sentence "What is filling the universe?" ugh so exciting to research.
It's fading away the candle is going out and the sick animals will no longer stink.
I thought this was Phish highlights from the Sphere…
I don't want to know😮
Well, it’s good to know that the heat death of the universe isn’t certain. I’m excited to know what we’ll learn regarding physics and astronomy in the next few decades.
How could it be certain? We have been looking at the universe properly for 100 years give or take. That is like a millisecond in a whole day. How can just a snapshot tell us what is going to happen in billions of years or what really has already happened to be exact? It can’t and we will never know.
The universe always existed in some form. Galaxies and life just come and go in this eternally existent existence.
Historically almost all knowledge gets overturned at some stage.
The eventual "heat death" will be due to ever-increasing entropy, and doesn't require dark energy. It only requires the universe to not have enough total mass to halt & reverse the expansion.
@@charlesbrightman4237 At least some of us get it. 👍
When the universe was younger it was more innocent, and pure. These days, there's metals and plasma and EM fields all over the place, it's quite a dirty mess, nobody cleans up, not a vacuum at all
Way more of the universe’ mass is now contained within black holes than in the early universe. If matter ‘supports’ space time and black holes consume it then perhaps dark energy is the result of less free mass and the flow of space time into black holes.
Universe is allways inocet and. pure!Only too much exlplatations and drrt im Space and too much exploatations under the seas everywhere brougt its work into dficult position
The Universe will go cold an dark and all that will be left!~
The universe will end in ice, when the last atom burns up. However, the earth will fall into the sun long before the last atom burns up. The earth will go up in flames The universe will be still with ice
no, the earth will not FALL into the sun. That is utter nonsense. The sun will enlarge during it's final phases, but probably just up to Venus' orbit. No falling whatsoever.
a whimper
The lanieka cluster or great attractor could be the reason galaxies aren't where they should be.
The thumbnail inevitably made me think of a Robert Frost poem: Some say the world will end in fire, Some say in ice. From what I’ve tasted of desire I hold with those who favor fire. But if it had to perish twice, I think I know enough of hate To say that for destruction ice Is also great And would suffice.
THE DARK ENERGY COULD BE FROM AN OTHER DIMENSION.. OR THE RESIDUAL POWER GOD USED TO CREATE THE UNIVERSE: "FIAT LUX"
- Please dont hurt the sky- is great poem!
So. Frightening.
This is wrong hyposesis! Why do you think that world must end? If it was meani g of it then creation nevef would hapoen! Creation created life and thst qas the only pourpose of it!
Changing the future the more intelligent we get
The main culprit is the misunderstanding of time and the universal constant being bound by a very useful misunderstanding.
so diverse
You THINK it's the fate of dark energy that decides what happens to the universe. My bet is nope. But keep guessing, guys & gals.
Nobody has seen dark energy ,dark matter. But most of you have experienced miracles, and synchronicities. THERE IS SOMTHING OUTSIDE OF OUR REALM WHICH IS ALSO INSIDE OF US.....we call it LIFEFORCE. THIS IS THE SUPER INTELLIGENT ENERGY THAT IS TAKING CARE OF EVERYTHING. It's in your heart.in every fiber of your being.TRUST IT.
I have never heard such unabashed bullshit in all my life! And a good many commenters here are smart enough to recognize that as well. But the guy did say we need to use our imagination. Yet say ‘They are making it up.’, and watch how fast you’ll have people saying ‘No they’re not, they have actual knowledge!’ When they’re just ‘using their imagination’.
Do you think the unexpectedly large red shift of distant galaxies is imagined?
@@brothermine2292 We’re talking DECADES ago. So I no longer remember, but at the time I read there were TWO OTHER EXPLANATIONS for the observed ‘red shift’.
>joan519 : Those two redshift experiments were done in 1998... but why do you think it's relevant that it was long ago? Additional evidence collected since then hasn't undermined the validity of the 1998 data, and the 2011 Nobel Prize was awarded for it. You might want to skim the Wikipedia article on Dark Energy. It discusses the (non-imagined) evidence, as well as alternative explanations. Other, more recent kinds of evidence are also consistent with the theory of dark energy. Implicit in your reply is your acknowledgment that this kind of "imagination" isn't fantasy. Theorizing consistent with evidence is an essential step in the scientific process, and it can't be skipped. It's part of how progress toward understanding is made. Subsequent steps are deducing consequences (predictions) assuming the theory is correct, attempting to disprove it by finding an inconsistency with other evidence, and attempting to disprove it experimentally by showing a prediction is wrong.
Agreed. No one knows what dark matter is or if even exists. Someone came up with what seems like a darn good theory, and when another person realized the observations didn't match the theory, they came up with a complicated fudge factor or kludge to explain the deviation. Occam's Razor suggests that it is more likely that either someone made a math error, missed something, or that the theory isn't fully baked yet, but instead of going back to the drawing board, they came up with a fugazi to salvage the theory.
Always thought the word " Therory" is nothing but an Educated guess.
There will be a new heaven and a new earth.
If you believe in fairytales, why are you even visiting this channel?
@@kellydalstok8900 you totally refuted him #science amirite
I have yet to hear a clear definition of what dark energy is and calling it dark energy isnt doing anyone any favors to help understanding it
Well then, what shall we call it? I vote we call it Unobservium
It's been called dark energy precisely because we *don't* know exactly what it is. The measured increasing expansion rate of the universe implies an actively energetic source according to the laws of thermodynamics, hence "dark energy" because there's energy that is as yet unknown to current physics which is a very exciting mystery to be solved. If the expansion rate were consistent (or even slowing) then that would be sufficient cause to believe that it was remnants of that rapid inflationary period, but the fact that it's *increasing* means there must be additional energy to identify that is currently beyond our ability to directly observe. People can be aware of a force without being able to explain the fundamental cause of it (such as gravity). We know gravity exists and can predict behaviors in incredible detail but physics has yet to identify specific particles/waves that *cause* gravity. Similarly, dark energy has observable effects (expansion and rate of increase) but the fundamental particles responsible are not yet known. So it's "dark" until it has had some light shed upon it.
i recommend PBS Space Time, he's REALLY good at breaking things down step by step, should be a dark energy specific Playlist i think...?? 👍
It is the way science has, as a whole, agreed that they don't know what it is. Only theories. Dark=mysterious. God of the gaps, if you will.
@@Hashpipe36You do not seem to know what a theory is. And god of the gaps is the exact opposite of giving a temporary label to a measured but not well understood phenomenon. It is humility while what theist do with their god of the gaps is ignorant arrogance. They propose they do have an explanation. That is why religion has held back exploration because why look if they already have an answer?
Dark energy = I don't really know what's going on
Dark energy = the expansion of the universe seems to be accelerating, so lets try to figure out why.
cold dark energy, I think I never heard of that? maybe and i forgot
Awareness is known by awareness alone.
Did you find that on an online Deepak Chopra quote generator?
Stupid is as stupid does.
We will end when Andromeda Galaxy collides with ours. Long before our Sun becomes a red Giant.
Most of the volume of the Milky Way and Andromeda is empty interstellar space, so there will be very few collisions. The orbit of our solar system around the center of the Milky Way is likely to be perturbed, and perhaps the solar system will even be flung out of the Milky Way, but that's unlikely to significantly change the planets' relative orbits around the sun.
Why does she think distances between galaxies grows. Doesn't the universe grow at the same rate?
Watch again.
No, the expansion of the universe has been accelerating.
It depends on the scale. Dark energy, as far as we know, has a constant density. If two galaxies are close enough, they will remain close because of their gravitational attraction. They're not affected because the universe's expansion effectively bypasses them. They just exist on an increasingly small share of the universe's volume. The real story is that dark energy's density may vary over time. A constant energy density means that as the universe grows, its dark energy grows. Since dark energy is repulsive, it hastens the expansion, leading to indefinite acceleration beyond c at some huge distance. When that occurs, from our perspective, the CMB will vanish from view, followed by galaxies in decreasing order of distance. Eventually, we will only see our gravitationally-bound neighborhood.
>chuckcoleman6502 : What do you mean by "indefinite" acceleration?
@@brothermine2292 The acceleration will never stop.
It's unfortunate to previews the obvious. Nonetheless, does it even matter if we are truly not even worth mesuring by comparison if we WE LOVE NOT EVEN THE SPIRIT OF THE DIVINE CREATOR(S)...
If you believe in fairytales and your imaginary friend, why are you even watching this video?
I feel we’d have a much better understanding of this if it wasn’t for the hubris of the scientific community.
Terrible narration
I know not the math but it sounds like someone may have been finger banging the AI again to make the mathematics match the observations. After all a girl can be a boy cause science..
Meaning the THEORY of dark energy this is still in the cult stage.
The discovery in 1998 of the unexpectedly large red shift of distant galaxies is cultish?
dark bs
😂😂😂😂😂😂 Ahemmm......... I have seen and mapped my future. So what I'm going to tell you is just for your plain entertain ment . Our universe is being mutated from carbon12 to carbon 7. We are going to become crystalline. SOON. the 1st, 2nd,3rd,low 4 and mid 4th dimension will dissolve after we get to the high astral,where we will reside for 2000years...the Aquarian Age. See you there....!
Have fun in your fairytale world. Do you have pixies and unicorns there?
@@kellydalstok8900well , unicorns or not , at least I know where I am going. DO YOU ???
evolving? haha
I an so sick of these people that have no clue as to what they are saying spending all this money studying something that doesn't exist.
Umm. Nevermind
It's very congruent to proving "God." No real evidence anywhere.
@@user-dh6bj2me5p No real evidence? God is just based on faith where the universe is very real and everything in it. Dark energy and dark matter are theoretical based on very real evidence. Not sure what the "no real" comes from.
@@user-dh6bj2me5p unlike god, there is evidence. We observe galaxies moving away from us and space expanding. It’s an observable fact. We just don’t understand why. Kind of like Neuton and gravity, he didn’t understand how gravity worked, but he could describe it and we are still using his calculations today.
@@mtylerw When is expanding space not expanding? When the mass is expanding as well. In fact it is the relativistic expansion of mass that is causing the expansion of space. So the distance between stars and galaxies never really change. This is the real reason for the red shift. That expansion creates the inertia that holds you to the surface of the earth. It also has nothing to do with the high energy neutrinos that are pushing the moon and the earth together. It is these same neutrinos that are pushing stars around the edges of galaxies faster than can be accounted for by a non existing for called gravity.
Pure bs. "Hints." "May be." "Might be." In other words, "We ain't got nothing!"
These are the same words that the so called " proof" of evolution uses.
Everything will soon come to an end! Lord Jesus Christ is coming soon 🙏🏼❤️🕊REPENT, believe in the Gospel, Be Born Again
According to a book of fantasies.
They've been making the "soon" claim again & again for almost 2000 years. What evidence do you have that it's true this time?
@@brothermine2292 Indeed, in the Gospels Jesus himself claims that the divine plan will be fulfilled in the lifetimes of some of his disciples then present. It never happened.
Don't care.