Could Aliens See the Dinosaurs?

[@patsteen9137]

Just imagine, first contact happens and the aliens would offer us full access to their ultra HD video archive of every moment in human history and the history of life on earth! What moment in history would you watch? :)

[@RyanRidden]

That sure would be an amazing "welcome to the neighborhood" gift! I think one of the things I would most want to see how the early human interacted with their cousins, like the Neanderthal. Was there a time where the different groups lived together, or were they always at odds with each other? DNA sequencing suggests Neanderthals interbred with humans, but it would be fascinating to see what happened!

[@jvcscasio]

That would be a dream come true

[@billscott4080]

Maybe.we.are.looking In.the.wrong.places Eg.the.seas

[@goonslaughter6820]

I wonder if there was dinosaurs n other planets

[@goonslaughter6820]

Nobody's knows if dinosaurs did had war with the aliens

[@silviomanuel473]

Oh my god, I've started with the Expanse spacewalk video, and here you are with another topic I've been annoying people with for years! Now I can annoy them on another level, thanks to you! You've doomed several innocent lives, Dr. Ryan!

[@themadman5615]

That ending was quite amusing

[@RyanRidden]

I knew my T-Rex suit would come in handy one day!

[@sausagejockey4298]

@@RyanRidden only real Dr's own a T-Rex suit bro. Love the vids bro. At least 15 of my mates follow you now and are sooo impressed. Love from England my man 🏴󠁧󠁢󠁥󠁮󠁧󠁿💪🙃

[@Kristjan_N]

An interesting question though: if aliens were living on alpha centauri 65 million years ago, could they have possibly seen the asteroid impact?

[@ozchoz]

Who do you think shot the asteroid at the Dinosaurs anyway?

[@listless22]

@@ozchoz Perhaps humans fired the shot from ac 65 million years ago, waited a bit, then moved in when the dust cleared.

[@ozchoz]

@@listless22 no it would definitely have been the space dolphins, long time arch enemies of the dinosaurs.

[@shanefarmer7193]

Now that is certainly not out of the realm of possibility’s

[@pauljthacker]

If the aliens can build a .67 LY telescope, maybe they can put it in intergalactic space where there's less local background light to worry about. I hope they're patient aliens.

[@mostlymessingabout]

I also looked at this problem and was actually considering humans travelling away from earth at superluminal speed and capturing the individual photons to see back in time. Either with a ship or space folding. It could be used to trace back crime scenes to see the murderer or something quite useful

[@kassistwisted]

The Jurrasic Park theme on bad harmonica is about the best thing I've heard all day. Thank you Dr. Ridden!

[@ronmani9476]

Ever since I was a little kid and learned about the "time-travel" we do when we look at stars I have wondered if this could be done.

[@RyanRidden]

It's certainly a crazy concept that's hard to comprehend, even though I deal with it everyday! Our understanding of the Universe would be extremely limited if not for the finite speed of light.

[@ronmani9476]

@Robert Koch! Sitting here on earth I completely agree.... but in an infinite universe with infinite possibilities who knows? maybe somewhere someones harnessing the gravity well around a black whole to lens distant objects. (I dont even know if that could be a thing but it sounds cool lol)

[@frinoffrobis]

@Robert Koch! but maybe they came here back then? or maybe sent a probe to see what was here

[@frinoffrobis]

@Robert Koch! yes, ur right.. they would not see details..

[@TheLoneStreamer]

1.22 equals 1.22 Me, an intellectual, agrees.

[@RyanRidden]

Agrees in 1.22

[@shanefarmer7193]

Sadge. If I had one dying wish it be for me to see t~Rex in the flesh. A fully grown and healthy one at that.

[@eazyeddy4899]

So in theory there can be complex intelligent life on other planets right now looking at earth as if it was a dead planet. This is mind fucking

[@AustinTheWeenieTickler]

Skip forward some time, those aliens will be seeing us arguing over mammoth skin, inventing fire and trying to summon the Ooga God.

[@IgnitionP]

Great video, it's actually 66 million years by the way

[@jorgepeterbarton]

Near luminal speed ship away from earth and continuously looking at the time that you left is the real sentimental christopher nolan stuff. (Cant get my head around time dilation though, so maybe not?)

[@sverebom7069]

I find it more interesting to figure out what we would need to see the remains of a city like let's say New York in a distance of 1,000 ly. Is there a chance that we might be able to spot distant alien artifacts with a huge interferometric space telescope?

[@stevenschofield8518]

Haha I loved the ending.... I hope that was you in the Dino suit lol

[@neosapienz7885]

That thumbnail, though. “Show me what you got!”

[@profounddevices]

what about a multi lens like a gearbox reduction, have an optical reduction. i dont know how this effects or distorts colors. and use a tiny camera lens to reduce overall scaling

[@TuuSaR]

Advanced alien folks would just send a drone to that space-time moment to check out dinos.

[@RyanRidden]

That might be easier than building a solar system sized telescope!

[@faqgougle7641]

John Williams better watch out, that kazoo player is about to take all his movie deals.

[@LexUniverse]

I knew the answer from the beginning, but it still made me sad :D

[@RandomGamer-qy6ys]

They leave their planets thinking they can destroy us since we are dinosaurs but then they come and find a semi advanced civilisation only years away from been a space baring civilisation

[@SuperAngela40]

This was a great video. KZbin needs to stick some ads in for you ! 1.22=1.22 was, alas, the only part of the math I definitely understood, Calculus and trig being so far in my past . I was wondering what your dinosaur skull model was, did you want to be a paleontologist in the past?

[@RyanRidden]

I did indeed! Eventually the universe won out, but I still think about ways I could weasel my way into paleontology!

[@Riceball01]

Only if KZbin actually allows the videos to be monetized. Otherwise, I'd rather not KZbin put ads in his videos that they won't pay him for having.

[@SuperAngela40]

@@Riceball01 well yes, that’s exactly what I meant ; the amount of care and time he put into these deserves some recompense IMO !

[@Riceball01]

@@SuperAngela40 He'd be better off with a Patreon account and/or sponsors for his videos, like maybe The Great Courses Plus, Curiosity Stream, or Audible even. From what I've heard, KZbin pays a pittance these days, this is why so many KZbinrs have Patreon accounts and get sponsors for their videos if they want to get any real money for their work.

[@lacamila666]

Please comment on DEVS! We could see dinosaurs with the technology depicted in that show :) I'm a new subscriber, glad I found your channel

[@RyanRidden]

DEVS definitely has some fascinating concepts. I might do something on it in the future!

[@MrSpatafrano]

But what about a huge mirror some 32 million light years from us? How big need it to be for our current best telescope to watch a live documentary?

[@RyanRidden]

It would still need to be pretty enormous since the resolution equation is hyperbolic, meaning that for really high resolutions you need really big telescopes! That said, I still think the main limiting factor will be the background light from the Universe. With the Hubble Space Telescope we have measured the diffuse scattered light in our solar system to be around 30th magnitude in visible light. This is extremely faint, but still much brighter than the Earth would appear from another galaxy. So if you wanted to be an alien observer, you would need to have either a new way of observing through space, or smaller observatories close by!

[@MrSpatafrano]

Thanks for the replay! Got it, like blinding high beam lights in the rear view mirror at night. Very annoying!

[@pauljthacker]

I've heard speculation about using a supermassive black hole as a natural mirror since it can bend light around it, but I imagine only a tiny portion of light would get reflected back to the source.

[@Ollied]

This is a telescope of our quality though right? I would assume a far superior alien civilization has telescopes beyond our imagination, so maybe they could make them smaller. Very well explained video! Thanks

[@marcosoliveira2841]

If we could travel fast than speed of light,through quantum entanglement,teleportation at 65 or 100 milhoes lightyear away,would i see the dinosaurs?or see our evolution?

[@andjoa1975]

Unless they were here 65 million years ago and took some selfies :)

[@RyanRidden]

I would be pretty jealous of those aliens!

[@desert8285]

They made them, and did a Noah deal and moved them off planet to another planet for safe keeping.

[@bastiaan7777777]

The background music (trumpets) are too loud and distracting, sorry.

[@RyanRidden]

Sorry about that!

[@bastiaan7777777]

@@RyanRidden Thanks for notice, keep up the interesting channel. (love)

[@lionhawk555]

8 month travel time for communication signals across that inferometer! Each way.

[@RyanRidden]

Keeping that timing accurate would be a massive pain!

[@mrspidey80]

@@RyanRidden Surely, a Type II civilization would be capable of using timestamps and location information in image data...

[@hd45783]

5:12 Whouldn't that light be red-shifted aswell, because of the expansion of the universe while it's on its way? - So that whould make the lense even larger ... ?! XD

[@RyanRidden]

Fortunately for our dinosaur obsessed aliens, the redshift haven't really kicked in yet!

[@epieter]

In conclusion, the only way alien species would be able to watch dinosaurs is, if they have a way to alter physics, have different physics, or if they can use wormholes to make shortcuts.

[@genuinefreewilly5706]

We have no means of 'seeing' it but easier smelling a dinasaur fart light years away,

[@jonathandevries2828]

Why is the constant 1.22 though?

[@coreycherkowski1556]

ok what if the comet was veins and did not hit the earth but just past by then what ?

[@jedsithor]

You should do a video about the reverse, about us looking at alien worlds and possible ways to detect signs of life, from atmospheric conditions to radio waves etc. I know Brian Cox (the physicist, not the actor) thinks that while life may be abundant in the galaxy, intelligent life is probably very rare, maybe 1-2 civilisations per galaxy. We may be the only sentient life in the Milky Way. Of course in a universe with a trillion or more galaxies, there could be a trillion civilisations but they're all so far apart that they'll never encounter each other. But why might intelligent life be rare? Well you only need to look at Earth. There's been life here for 4 billion years but for 3.5 billion years (give or take a few hundred million years with any of these numbers) that life was microscopic. Animal and plant life is only half a billion years old and has gone through multiple mass extinction events. No intelligent life formed after the Cambrian explosion, no intelligent life formed in the age of the dinosaurs. It wasn't until mammals came to prominence that we saw the emergence of high intelligence and even then it still took 60-odd million years for hominids to develop. Then again, once high intelligence began to develop, it happened really quickly. Humans spent a couple of hundred thousand years as hunter gatherers but once humans discovered farming and started to settle down, civilisation emerged and evolved at an incredible pace.

[@RyanRidden]

Great points! I've been thinking about doing a video on the search for life.

[@realitysuccesstv9996]

LETS ASK OURSELVES THIS...WAS IT REALLY ASTEROIDS OR WAS IT HUMANS FIREING MISSILES ???????????

[@javierhillier4252]

So basically theres a video of dinosaurs in space

[@Macadelic_2]

Basically yeah

[@anusmita5309]

So amazing explanation sir...I had this question for long..it's crystal clear now! Can you please make a video on explaining the logic behind one of the example of time dilation.. That is, If an astronaut ,in the age of 15, goes to space in the speed of light and stays 5 years and then returns earth he will be 20 years old but the friends of his age will be 65 years old. But what's the deep logic behind it..if possible, kindly make a video on it.. It's striking me always since months and now I'm 14 year old...... So if possible please do it in simple way.. thanks..

[@RyanRidden]

Glad it made sense! That's definitely a good question! It might take me a while to have time to make a video on this topic, so I suggest you look at the minutephysics video series on special relativity to get a good understanding on the deep ideas of how time dilation works. kzbin.info/www/bejne/Z6OviImQi7yZmrs I hope those videos make sense!

[@anusmita5309]

@@RyanRidden Thank you so much sir for your help..🙏 I'll surely watch the recommended video...

[@jorgepeterbarton]

Am not sure if that example is right. At light speed he would experience no time passing and his friends be 20 years old, no?

[@supmf5496]

Dinosaurs dont Emmitt light this video is wrong..