Sorry, Space Is Just Too Big And Scary

[@rickhayes8009]

No idea how you can produce a script like this, combining so many science facts & educated opinion. Every video you release makes me feel smarter than I was when I woke up. 😊This was the best 40 minutes of my day.

[@No_OneV]

This channel is truly a hidden gem.

[@ddo6945]

The algorithm needs to push this channel more!

[@patrickwalters8817]

One of the best channels on KZbin. Brilliant stuff

[@Davespenathome]

So judging by the clock on the bookcase you are travelling at the speed of light.

[@bluedotdweller]

@@Davespenathome Or maybe the easiest explanation is that I need to change the batteries... Who knows!

[@sevenstars004]

Everyone and everything is constantly traveling through spacetime at c. The faster you travel through space, the slower your passage through time and vice versa. Traveling at relativistic velocities presents many problems. The question of generating the energies required is usually the main talking point, while the rest are often overlooked, not least of which is time dilation. There wouldn't be much fun in going to the other side of the galaxy, in what felt like hours, to return home and find that not only is there no one you know but the human race went extinct tens of thousands of years before your return.

[@utubesgreat4me]

Superb videos! Thank you. Also love how they are not polluted with hugely annoying embedded advertising.

[@I.C.Weiner]

Space. It seems to go on and on forever. But then you get to the end and a gorilla starts throwing barrels at you.

[@artdonovandesign]

Great Episode!!! You did such a fascinating job detailing the trajectories and speed of our probes. Where they're going... How long it will take... Etc. Pondering the scale and shape of all there is... _Scary_ for sure!

[@damonl9981]

Channel is being slept on. Good stuff.

[@illogicmath]

1. The algorithm suggested your channel 2. I started watching and got hooked 3. I thought, hm 🤔 this is great content, excellently explained, with perfect diction 4. And above all, you don't have vocal fry 5.Hence, I subscribed and gave you a like.

[@andycordy5190]

The thought of the vastness of space and the possibility of other beautiful places that humans will never be able to desecrate fills me with hope.

[@CitrianSnailBY]

An *EXCELLENT* Presentation.👍🏻👍🏻

[@sunny3907]

Whenever people complain about the universe being seemingly devoid of life, I can't help but point out how mind-boggling immense the universe really is, add to that the unobserved universe, and the non observable universe and then how mind numbingly slow we are. The universe is so big, that the speed of light on a cosmic scale is actually considered slow. Add to that the expanding nature of the universe , which would mean we have already lost part of our universe and will continue to do so as time progresses. Human brains aren't meant to grasp these limits. I don't think us humans were meant to explore the universe. It makes me truly depressed.

[@rwarren58]

I watched it last night. It’s filled with good stuff and Blue.

[@peterbradford5987]

Another great video. Loved this.

[@coherentmud]

Having been inspired by this most magnificent video, I have decided to create a craft that doesn't use worm holes but gopher holes. There are more of them and gophers are faster than worms. However, because we will be travelling down a hole, we will have to travel at the speed of dark. I will call the ship Meerkcat One. However my 8 digit Casio calculator is having difficulty working out the square root of one over the speed of dark. Leave it with me, I've got this.

[@jeff-73]

Fantastic video! You are an excellent speaker ! What about tachyons or the blue green light emitted in nuclear plants where the color is due to photons or something going faster than light?

[@tannisbhee7444]

Tachyons are theoretical and the blue light is not traveling faster than light.

[@R.o.Ro.]

I was hoping for a new video from this channel for a while, but this longer form video is definitely worth the wait.

[@kimbosnjak4857]

Love your videos :)

[@agxryt]

Here's an idea - send a probe to nearby stars - a probe that can take energy from them, to power a signal. The signal should be equivalent to the Voyager golden record. Considering the time scales, it would probably be a relic of a lost civilization, but at least someone would know we were here

[@SpaceRyder444]

Excellent video...liked and subscribed!😊❤️

[@metameta1427]

So glad I watch so much space content that a smaller, gem of a channel like yours has been recommended. Instantly subscribed.

[@MarkHower-ne5zc]

I really enjoy your videos!

[@mO11O11O1mm]

Captivating. I usually don't comment on youtube but I wanted to thank you for making these videos, I appreciate your work

[@agxryt]

I think they're big fluffy anthropomorphic cat people, and I wanna meet them It's a cruel fact that we're too far away 💔

[@DeathByRhapsody]

I dunno where your videos popped up from but this is my new binge. You are beautiful, fascinating and talented.

[@solospirit4212]

Great video..thank you. A good over view of lots of interesting and imaginative ideas. Nice to see the Orion drive concept getting a mention..its a technically achievable, within the short term, practical "short range" interstellar drive...and what a wonderful way to find a use for our stockpile of nuclear weapons. Longer term, if we ever get our heads around fusion..then a Bussard ramscoop could extend our practical sublight exploration range much further...possibly using an Orion drive to get up to ramscoop speeds. And i suspect we will have developped those technologies well before we get an Alcubierre type warp drive 🙂 I agree that most pf our next exploration voyages will be robotic, probably combining organic and inorganics to make our proxoes..after all, technically a bacteria or a virus is, almost, a perfect little self replicating Von Neuman probe..we just need to tweak them a little so they can work for us too. I also wouldnt be surprised if probes of that kind are the first evidence of alien life out there..but im not holding my breath waiting for them to turn up 🙂 But its always fun to imagine what could be 😁👍

[@johnkerr762]

I personally suspect that the issue is that technology is exceptionally rare amongst living species. Look at earth, only one species amongst millions has any understanding of technology, and amongst us only the rarest individual has any real insight. Had history been a bit more volatile or taken any number of different routes we could still be stone age hunter gatherers. Technological societies are almost certainly very unlikely and very fragile.

[@ElyonDominus]

My favorite hypothesis is the Rare Fire Hypothesis. Essentially fire requires a fuel source, enough oxygen for combustion, and a spark. Without any one of those things you don't get fire. Life is the only known fuel source for fire. This means you also need dry land on which life has emerged. Even if you are a hyper intelligent species you won't have the ability to do much without those aspects. Obviously this is a very simplified retelling of the hypothesis.

[@TiananmenSquirrel]

T'is weer een goei'ke begot❤

[@LuisAldamiz]

Indeed. Fermi paradox is not even paradoxical!

[@patrickmchargue7122]

To explore the universe we need either life extension or to upload ourselves into a computer. It would likely be a nomad-like existence with limited communication back to your original home.

[@illogicmath]

@@patrickmchargue7122 AI will explore the universe, long after mankind, as we have known it, has disappeared from the face of the earth

[@tncorgi92]

Unless someone finds a way to counter "tin whiskers" (metallic solder/circuit board degradation) we probably will never build a craft that will function correctly for more than one lifetime. I suppose you could build an on-board robot to maintain the equipment en route to the stars but at some point Murphy will win.

[@patrickmchargue7122]

@@tncorgi92 Photonics. Also, backup storage and backup systems.

[@toomanydonuts]

Try to prove the "outside world" is really outside of you. You can't do that. The universe is at the base of your skull inside you. The universe happens within consciousness. Is the physical world external? We can't know that. The screen of perception is inside the mind. That is the only truth we know.

[@TheDennys21]

We are made of elements that were created in the cores of stars.

[@Tankard1990]

Hey there. Such an impressive wholesome video with bittersweet content and so many thought-provoking impulses. I very much enjoyed listening to your eloquent remarks in your chilled presentation style. You have summarized so much information that other channels would have needed dozens over dozens of seperate videos for. Thank you so much. :--]

[@markpaladiy5748]

Imagine we had no experience of any living world. Imagine we did not know what a dew-touched field of grass is. Or 'night', 'daytime', or 'morning'. No sunsets. No plants or animals. No 'starry nights' as seen from the grass of such a world. Instead, all we knew were things such 'hot balls of fire' seen from inside a Star Trek-like star ship. We would have all the 'synthesized' food we could want, but only by way the toil and expertise of maintaining such 'glorious' technology. We would not have free air, free gravity, or free atmospheric pressure. We could not say, 'My darling, your eyes sparkle like dew in the morning'. And there would be no romance in likening our lover to a moon. We dare not let any system of life support go untended, lest we die, or, at least, deeply suffer until we got it working well again. Could we even be properly human? We would not know of clouds, rain, or peaceful sea coasts. Instead, we would be oppressed by mere bulkheads, and the ever-need to maintain energy shield generators against cosmic radiation. What an un-beautiful life it would be. If fact, for not having ever known of a living world, what hope could we feel? Too, if someone were to tell us of such a world, how could we believe him? It would just be too fantastical, and too strange. In actually knowing of such a world, we think we objectively imagine that a Star Trek-like space ship is rather glorious. But, in fact, in its own terms, it is a hunk of junk. So, now, imagine our ship has automatically taken us to the Earth, and lets us out onto it. I think we would be far, far more awestruck at that than we could ever be by suddenly having a USS Enterprise. And, we would be awestruck every moment of every day for the rest of our lives. I am inspired to write this because of this girl: kzbin.info/www/bejne/o4S9g4VobZeilbM

[@Zenith8896]

I am binge watching your space videos, and your informative style reminds me of fellow space & science teacher/KZbinr by the name of Anton Petrov. ^0^

[@asdf8asdf8asdf8asdf]

This lovely and eloquent presenter has a voice reminiscent of the gentleman from Driving4Answers, another absolutely brilliant channel for people interested in engines and motors. I wonder if they come from the same country....?

[@ThirdEyeTyrone]

Good channel

[@markalton2809]

I wish I'd listened to this before I tried to explain why there are no aliens to my brother, I could have just linked him to your video.

[@mikemurphy5898]

I always cringe a little when I hear that something cannot be done. The science (and history) books are full of respected, grey hair scientists saying something is impossible that was later achieved by a younger generation of scientists. I believe 1 of 2 things to be true. Either faster than light travel is truly impossible and thereby space travel beyond our own solar system is little more than a curiosity or space is maleable enough that "warp drive" technology is actually possible and it's development is imperative for true interstellar travel. Since the one exception I'm aware of for faster than light travel is moving space itself.

[@nuguns3766]

Woah a documentary. Im saving this for later

[@naciremasti]

How long will the Pioneer and Voyager space crafts last before they're slowly eroded away by dust?

[@bobmorr2892]

This was an amazing video as always. But I was wondering what you're referring to when you said that other civilizations out there would only have heard from us in the last 800 years since we've only had radio for 120 years I'm just wondering how they would have been made aware of us before then?

[@burnedbeans4170]

Possibly somewhere 100s or 1000s of light years away Earth is being watched and being called an exoplanet with the possibility of life. Thanks, great doc.

[@bvldr]

I’m a big big fan of long form videos. I hope you make more of them in the future.

[@robertngreen6]

This is such a well thought out, well presented, and well illustrated video. Very thought provoking. 👍

[@MichaelP-ns]

The search for 'alien' life isn't about where, it's about when. Time is truly the enemy.

[@dannymckenzie5061]

I think I love you r videos more than any others. They are so professionally done and the edits are great, as well as the content which is the most important thing. I spend too many hours contemplating the nature of the universe and i wonder if there's anywhere i can pose questions and float ideas. I think gravity always works along with electro magnetic forces when subs and planets are formed, gravity alone doesn't explain how Jupiters moons are so different whilst being in relatively similar orbits, as if all volcanics formed one and all ices formed another and all rock formed another etc. water is as dense as other elements so you'd expect gravity to mix all of these and for similar moons. All sounds have vast magnetics, Jupiter has vast magnetics, even EARTH has magnetics, so magneto electric forces have to be considered? Thanks for being you, plz don't change your formula. Best wishes

[@randyhavard6084]

You should make some playlists with your videos

[@QuartuvLarry]

I think Liu captured the human descent to insanity when cast into the void near the end of The Dark Forest, that upon leaving our earth behind we lose our humanity and become something else… Can’t blame you for the title of this video

[@BURDYMAN777]

Woo! Found a new space/science channel that isn't AI! This is only my second video, but you've gained 1 more follow 😀 Keep up the great work ❤

[@mistercomment1622]

I learned a lot from this video. Thank you!

[@TysonJensen]

“Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's long way down the road to the chemist's, but that's just peanuts to space.” -- Douglas Adams.

[@dvora_margaux]

very well-done and thought-provoking 🙂 so weird how people will focus on travelling these impenetrable barriers, yet the actual solution is right in front of us: what if we just focused on what we are seeing rather than how to get there? whenever we think we see nothing, such as in the so-called darkness of deep space, we are always seeing something, it is just that time and distance makes some things more visible than others. everything that exists has an origin that goes back to the hypothetical big bang, a spacetime moment that both precedes and encompasses everything, so that ourselves as well as an alien civilization can relate to it equally. interstellar and intergalactic space is meant to be observed, not travelled, and i think that is what resolves part of the Fermi paradox, although there is much more to it than that. our survival as a species depends on how we apply our scientific observations, and the far future may hold the definitive answers to the paradox if we create sustainability for ourselves, something which is not happening at present. i think the most mind-bending and paradigm-shattering thing in physics is the idea that the so-called universe does not exist, and we must instead be responsible for interpreting and applying our own observations of spacetime locally. we will see and talk with extraterrestrials one day, but one of the major mundane observations we will share is how similar we are, even if we have visible differences. this seems to be a byproduct of evolution itself, much like how all life at present on Earth comes from our LUCA. for example, if the Silurian hypothesis is true and we are not the first advanced species here, we might one day discover through fossil or some other kind of evidence that they faced the same problems we do about almost everything, including how to create sustainability without massive climate change. but we need to create more interest in science as a driver for sustainability so we can reach that next stage of observation, and the only real exploration we can do is within the solar system.

[@JKDVIPER]

Think about the ocean, do the fish know we’re up here? Because they haven’t figured it out yet as far as I can tell. Secondly, structure comes to mind. How do we know space isn’t shaped like a TIRE TUBE? It probably is matter of fact. I think the universe stops where matter stops. The vacuum goes forever. I think the formation of matter/the process, is making space expand. Especially the dense masses. Displacement being like a pond full of weeds. Space/matter. An analogy. When we began it was hot and dense, cooling meant we need more room. More room, you have entropy and activity. No room or space no fusion or combustion. Beyond that I think heat chasing cold near a black hole must be so intense, storm causing. Intense storms on earth are formed by low density gas and low temperature liquids. A heavy element in subatomic particle form subcooled to absolute zero must make one hell of an attractor. Aliens are probably out there just because I can imagine all the different time spaces going on all at once. When we see a light from andromeda we see the past. Most of the universe is the literal past. Takes too long to get there, by then everyone will be gone. Galaxies hold together from thermodynamics acting like GLUE.

[@benmathews2762]

Logically, I know how unlikely it is we'll ever span across the stars, but I still believe we will someday. I have mastered doublethink 🤔

[@jimmackey2909]

Two things come to mind after your excellent video: The impossible is only impossible until it becomes possible; further research into quantum entanglement could solve the communication problems. Thank you for your insights.

[@robotaholic]

One thing about looking for a needle in a haystack is you could use a really strong magnet and easily find the needle... don't you think it is possible in the midst of all this pessimism that we could possibly discover technology that could aid us in space travel?..and I understand how big space is as well as any humanoid can...

[@johngrundowski3632]

Thank you ; GREAT PROGRAM🔭📚🌐

[@kparker2430]

I think the system must incorporate worm holes or sub space to permit interstellar travel, else there is a floor in the design, which doesn't accommodate meat doing much of anything. It could be one needs to wait on the post meat stage of existence, which is good as that might be the logical time for travel. Already humans spend too much transporting meat. When we can ship our consciousness without the baggage, that is likely when space will open up. ta for the vid. :)

[@NCfrost82]

If they were to find alien bacteria or whatever lowest alien lifeform on an alien planet it would be just as good as finding the intelligent kind for me. I mean at that point we will have to presume there is definitely higher lifeforms out there. At that point it will be safe to say that we're not alone.

[@PANTHOR4316]

Can you do a video on your thoughts on flat earthers?

[@peterd9698]

Although there is no evidence FTL can exist, here is a "good enough for SF" way to avoid the paradoxes: Apply the rule that you can only travel to locations with a lower CMB temperature than your origin. It may not be the temperature that matters. Im just using that as an example of something all observers can agree on. Also see "CMB rest frame". Since normal travel also obeys this rule, no combination of normal+ftl hops could ever get you back to your starting point with a higher CMB temperature than when you left. It seems reasonable that if we could open wormholes to distant points in space and time some principle like this would exist that prevents paradoxes. (Also see: chronology protection conjecture). Anything that would cause a paradox could cause like the shriek of microphone feedback, disrupting the hole before anything could pass through. If your story needs FTL, and you dont want your story to be about time paradoxes, this just seems a nice way to deal with it.

[@epiccurious3536]

I think I'm in love with you. Thanks for another fantastic, reality based mind experiment. I agree with everything you said.

[@PoisonRhino]

Nice video. I often dream that after death you just get to teleport from star to star and observe for yourself, literally everything. Will definitely make it a less resource heavy operation.

[@mikemurphy5898]

28:05 I heard you mention that there's no evidence of wormholes. You might want to look at some of the research they're doing with entanglement and quantum computers. It may surprise you! 😊

[@efebrahim]

just started the vid, but i gotta ask. how have our signals reached 800 lightyears? how is that possible? have we been broadcasting shit for 800 years?

[@TomGerritsen-o9r]

Our eadio signals started in 1919, don't know where you get this 800 number from?!

[@rossmcleod7983]

With respect, when you have had a truly anomalous experience, everything you thought solid turns to mush. Great show though, love your work.

[@peterbradford5987]

Will the universe implode one day once it’s expanded to its limit?

[@stoobydootoo4098]

What limit?

[@DaaSaa-lt3is]

They are already here. We are just a baby space thing

[@anthonyfamularo8875]

I do get a little "concerned" by the utter lack of evidence for intelligent life from *other* galaxies. I mean, we have such a good overview of so many millions of other galaxies, and there's not a single case of weirdness sufficient to even suggest a galactic empire. In my mind, some version of the zoo hypothesis is the only "good" way around this. To find evidence of it would be both terrifying and a relief. Actually ... I feel both ways about the rare-earth hypothesis too. Being "alone" is a bit frightening, but the prospect of having an utterly blank canvas for our future is incredibly enticing. Aside: The number of known exoplanets has seemed frozen at "about 5000" for like four or five years now. Why does the pace of discovery seem to have gone down?

[@ElyonDominus]

If you want to be an ancient aliens bro this is the crackpot type of thing you say.

[@penny-farthing]

​@@ElyonDominus harsh! 😮

[@ElyonDominus]

@@penny-farthing The truth. I'm not being mean. We cannot allow conspiratorial thinking enter into intelligent discourse. As soon as you do there is no such thing as evidence nor truth. It must be resisted at all times.

[@penny-farthing]

@@ElyonDominus on reflection I agree with you - I don't know how best to counteract it however I accept "being kind" does not work so yes the comment was harsh but true 👍

[@Sauron191]

I think your beautiful Bluedot!!

[@alinourbakhsh8338]

ETs already figured it out. Don't take my words for it, ask USAF, NAVY and Space Force.

[@harryquinn8911]

Intelligent life may be unique? You haven’t much grasp of the size of our galaxy then never mind our universe 😢

[@shaydorahl6740]

No such thing as the Fermi Paradox, Abiogenesis is debunked due to limiting factors the biggest of which being information insufficiency.

[@kinguq4510791]

I agree with your pessimism. Space is too big, light is too slow, and our lifespans are too short. Interstellar travel, even to the nearest stars, sis simply impractical for us. But our solar system has lots of real estate on a scale that we can deal with, so we do have a future in space.

[@martinalladin8981]

I am not a mathematician by any stretch of the imagination but I don't think the time dilation information is accurate and here's why....... if you went to Proxima Centauri going to 99% the speed of light it would only Take 5 years to get there p e r i o d. Show 5 years would pass on Earth and like 2 years would pass on the spacecraft does the planet being 4.2 light years away going 99% the speed of light it seems only 5 years should pass even though it passes slower on the spacecraft only 5 years should pass on Earth please point out how I'm wrong

[@MarkHonea-dx6mv]

There are less than 10 stars within the range of receiving our first radio waves. The bubble is expanding very slowly- the speed of light. If you believe the speed of light is the ultimate of top speeds, which i dont, it would be a very long time before we have much chance of getting noticed.

[@Jaggerbush]

How to get me to become a sub to your channel? Talk about the Fermi paradox 👌👏👏

[@jeriatrix4526]

Who's going to pay for all of these space travel fantasies?

[@mikedonnarumma5337]

Intelligent aliens would not reveal itself to a population who's favourite pastime is tribal warfare.

[@EdwardHinton-qs4ry]

Humans will never leave Earth. We will die out having never left the solar system. The universe clearly exists to never be explored physically.

[@DolphLundgrensDolphinDungeon]

Such a boring person

[@ShirleyTimple]

"Hide yourself well, Cleanse well" - Singer