Why Is 95% Of The Universe Missing? | Space Mysteries | Earth Science

It turns out we don't know as much as we think we do about our universe.

Why Is 95% Of The Universe Missing?

How do we find something we can't see? Well our universe is made up of dark matter, we can't see it but we know it's there because of its effects on gravity. So naturally scientists are going underground on earth to find matter in space... confused? Dr Becky Smethurst an Astrophysicist leads the team of scientists to explain how we got about exploring our universe.

[passerby]

The comments on this video are so darn ignorant of the physics involved, yet so utterly confident in their statement. Which is weird, because I would presume the channel attracts people who'd be less Dunning-Kruger.

[jayarava]

Nothing is "missing". 100% of the universe is definitely there. We just don't know what it is or how to explain it. That is to say there is no ontological gap, but there is a huge epistemic gap.

[deezynar]

Actually, the behavior of galaxies does not indicate that there is matter present that we haven't seen.
That is an assumption.
It could be that gravity works differently than we think.

[shaantalk]

Not a physics expert infact I don't know physics at all

But I have a question

There is a part of the video where its said that distant galaxies were found to be further than where they should be and accelerating at a much higher rate than what they should. So we have a baseline expectation of how things should be according to the physics/maths laws that we currently know off

What if, 100 years later we find that today's maths and physics laws were just not mature enough to explain those things and new equations/theories/laws can explain why those weird accelerations were happening in the first place and then there isn't a need of dark matter/energy to explain those weird phenomena

exiting stuff isn't it ?

these experiements are win-win for humanity.. even if 100s of years later we find that dark matter don't really exist and just find corrected versions of existing physics equations/laws then also we as humans will win.

Am I wrong or dark matter/energy have to be there somewhere ( just hiding ) ?

[edison]

How can you assume that 95% is missing if you dont know the totality of it? 😕

[joefrancisochia]

How do they even know we can only see 5%?

[Baner]

Dont think that we even know 5% of it. 🤣

[SuperMikeKaos]

Sometimes it feels like we are 2d beings trying to understand a 3d world...

[Yutani_Crayven]

Wait, what. I came here for BBC narrator voice. Random Dr Becky appears. This really caught me off guard. Well done.

[cbflazaro]

sup with the dramatic side lighting on the interviews?

[Ashurhadsrubal]

I see Dr. Becky Smethurst, I click the like button

[Sannidor]

It's not missing. Our understanding of the world is limited and we should not operate on faulty models, filling the gaps with nonsense.

[jasonoverman]

Here's a couple of possibilities however unlikely they may be.
Is it possible that some of that missing energy is the consciousness of living beings or something related to that?

Did the universe really start to speed up or has it simply not reached it's terminal velocity yet from the explosive force of the big bang? Sure from our perspective billions of years is an insanely long time but from the perspective of the universe itself it's only the blink of an eye.

[hyperhippyhippohopper]

To be completely honest I'm growing tired of one video after another saying: "We don't have a clue what this stuff is"...

[MissCaramelSmoothie]

My opinion is that this can go one of two ways and it comes down to whether the universe was created by an intelligent being or just by happenstance. If there is a being that created the universe, we will never be able to discover what the dark matter really is because we won't be allowed to look that far by that being. This area would be off limits to us as humans. Which makes sense since space is such a hostile environment to the human body. But if this universe was created by chance, then we would just be limited by the right tools needed to probe these areas, so that makes me wonder if we will ever have the technology to get us to look into these areas.

[Regalert]

It can be those virtual particles that appear briefly, and go. Imagine they reappearing every second (or less). The sum effect could be the same as a stable particle...

[gruber]

So you know dark matters there do you, tut tut these kids today.

[jondoeami]

Mind boggling to think that there is no end or limits to a space which is the universe

[SteveWalden]

Are we able to rule out higher dimensions? Pocket universes? Science fiction "words of the week?" (i.e. things we can fix by modifying the main deflector dish?)

[TJSaw]

The universe is vast with unfathomably enormous distances between galaxies. Dark matter could just be enormous gas clouds that don’t have sufficient gravity to coalesce into stars or galaxies. And because there’s no light source to see them, we can only detect them through their interactions with the surrounding matter that we can see.