Invisibility: The Science of How Not To Be Seen with Neil deGrasse Tyson & Greg Gbur

Can you make something invisible? Neil deGrasse Tyson and comedian Negin Farsad discover the science behind invisibility with professor of physics and optical science, Greg Gbur. What would real-life invisibility look like?
Can you be invisible in other parts of the magnetic spectrum? We discuss transparency versus invisibility and how metamaterials help us interact with different wavelengths. What does light have to do in order to make something invisible? We break down invisibility cloaks and other invisibility devices from fiction.
Could you make yourself invisible to all parts of the electromagnetic spectrum? We explore the main challenges in achieving invisibility and the difference between passive and active invisibility. How useful of a power would it be?
We discuss the interaction between waves and matter. What makes some waves reflect off matter and others pass through? Learn about x rays and how they work, plus, an at-home invisibility trick using prisms. Finally, could you make someone invisible to time?
Thanks to our PatronsDan, Nick Taylor, Beth Fitzpatrick, Jim, Laura Gilsman, and Gregory Greenwood for supporting us this week.
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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!
#StarTalk #neildegrassetyson
00:00 - Intro to Invisibility
4:04 - Can you be invisible in other parts of the electromagnetic spectrum?
09:00 - Altering the path of light
15:02 - If a device uses energy wouldn't that come up in infrared?
18:20 - How could you make something invisible to all parts of the spectrum?
23:58 - Would someone who is invisible be able to see?
28:40 - Active vs. Passive Invisibility
35:32 - The interaction between waves and matter
44:17 - Is it possible to make someone invisible to time?

[@StarTalk]

Want to learn more about the science and history invisibility? Check out Dr. Greg Gbur's book! amzn.to/3AJEo2y

[@genericusername5909]

Regarding the black/white question; illuminating things with sodium lamps will remove color information, save for the orangey sodium lamp color

[@NuntiusLegis]

I once heard a strange, somewhat aggressive noise, like a warning, in a small forrest of young trees besides a new, yet empty business area (streets, but no buildings yet, I had slipped under a barrier to investigate it). But I felt more curious than warned, so I picked up a stick and hurled it into that direction. Seconds later the noise appeaerd again, directly in front of me, right into my face. I froze in terror, was sure to get killed at any instant, then fled as I never fled in my life. Nothing could be seen.

[@ahinsaGaming]

After 15 min in the video I realized i need a refresher on waves.. i am glad i did that , Always a pleasure to watch startalks

[@2hockeystixneil]

YESSSSS NEW EPISODEE!!!!!!!!!!! Im 21 from Dallas. Love this podcast and watch it every night at work. Im an overnight stocker. Much love and support

[@StarTalk]

Hope we make the shift a little more entertaining :)

[@i_smoke_ghosts]

thank you people for allowing a sit in on a fascinating subject the discussion of which is usually done (in my experience) by comic collecting boys or 'just smoked a blunt' stoners ... both groups i respect however hearing it'from the horses' mouth ' is a golden opportunity. thank you all 🙏🏽

[@Sammasambuddha]

Some of us require *blunt* force learning! Heh..heh...heheheheh.

[@dunderwood4444]

Or you could be Blessed with 2 Narcissistic parents and become the invisible child, That was my life

[@treybaybie1526]

So sadly true ! 😕💐

[@jeffreysherman8224]

OUCH! 😨 Sadness... 😭

[@makayladorvil1542]

❤

[@sunflowerglitter9233]

Facts! Especially when they’re both narcissists.

[@kencochrane2885]

Sounds like you had it good. I would explain why but the content of my childhood in contrast is too dark for this thread.

[@TroyNaumu808]

Everytime I listen to Mr. Tyson my mind is literaly blown and enlightened.

[@i_smoke_ghosts]

right on !

[@mykeljmoney]

RIP your mind

[@fuckthisbs]

Maybe not quite "literally" 😂

[@Sammasambuddha]

Put some plastic down.... ...works for lotsa stuff!

[@FrozenLabRat]

kind of but not when he talks about things he shouldn't, like vegetarianism and consciousness.

[@top40gordy]

Love the show! Every variation of Star Trek has had at least a few episodes dealing with cloaking devices. In The Expanse, Mars had developed a fictitious stealth paint that the bad guys use to attack Earth by fooling the asteroid protection grid. The asteroids were essentially camouflaged by the paint. The Romulans needed power for their cloak, so they couldn't use their weapon without decloaking. In Star Trek VI, Uhura's idea about the tailpipe allows them to successfully target General Chang's cloaked Klingon warship.

The first things that I've thought when this video was recomended to me was two animals: the chameleon and the octopus. Both deals only with the visible wavelength, but both were "naturally adapted" themselves to try to be invisible against any other threat/prey. The octopus goes even beyond, because it changes the skin not only about the color, but also the shape. Alright, it's not true invisibility, it's mimetics (sorry for my english. Not my native language, that is portuguese. I'm from Brazil). But the way both animals do it, appear to be very effective, and the only main "sensors" they use are tiny eyes. I'm pretty sure that both use not that much energy to perform the trick. Loved this episode. Thanks a lot for inspiring us to use our brains and get us out of our "confort zone"! ❤️🤗

[@supaslime2938]

Yeah I thought the same. The octopus and also the cuttlefish are masters at this. I believe the cuttlefish can also change the texture of their skin also to match their surroundings. It is very cool to watch

[@user-tc1fw5ms5s]

I was thinking of the octopus too！ Also, your English is better than most Americans lol

@@user-tc1fw5ms5s thanks a lot!!!

[@frankwestphal8532]

Yeah this is a great example of active manipulation vs passive. I can see why Greg said that the word "invisibility" is high subjective. Things can be invisible or somewhat invisibile for many different reasons.

[@Marco.Polo.Fisher]

Consider other animals and insects as well whose coloring and form is perfectly suited for them to blend into their environments. Tigers, leaf bugs, walking sticks and etc...

[@danielludlow8960]

I agree with Neil Degrasse Tyson.. I'm 55 and what refreshes life for me is learning more things. I may not know everything but I know a helluva a lot more than I did a year ago. I love this about life in America. The freedom to learn more.

[@WtfYouMeanDude]

I tried the invisibility cloak at work, but apparently it didn't work because they found me sleeping in the broom closet and fired me ...

[@cicad2007]

What I didn't hear mentioned is that I have seen windows that turn from transparent to dark with the touch of a button by rearrangeing the micro-crystals on the glass coating.

[@anulis2010]

What happened to Chuck??? I love Neil but I cannot watch these without Chuck anymore 🤣

[@Nefville]

Can't say I saw this topic coming but I'll see where it goes. Or not.

[@jmanj3917]

23:40 Yes, Doc, the B-2 is engineered to greatly reduce its heat signature as well as to present a miniscule radar cross section. The engineering behind this aspect of the B-2's stealthiness is really quite brilliant. And it's so conceptually simple that you might wonder why it isn't commonplace in the industry. The exhaust is re-burned (for lack of a better term), and then it is actively cooled before it exits the plane. Then, when the exhaust is finally ejected from the rear of the plane, it is spread across a wide area (so as to make it a planar ejection area) rather than through a singular, (point-like) nozzle. And, as you know, the larger the area through which the exhaust is passing, the less dense will be the energy emitted. This makes it harder to detect as well. So, the combined effect of these steps is that it is very difficult for a heat seeking (infrared) seeker head on a missile - the missile's "eye" - to track it. The same applies to the radar systems that are supposed to identify, lock onto, and track the aircraft as part of an air defense network. The cooled, pre-thinned exhaust just doesn't present itself as a viable target. So, although it does still emit a good deal of heat, it is not something that can be effectively engaged via IR/heat based weapons systems. Add to that the radar absorption and dispersion, and you have a bird which has been known to frustrate the heck out of its enemies. 'MURICA!! 😀

[@27Afroman27]

Doubt I’ll get an answer but if anyone can answer me this is a black hole not technically invisible?

[@jeffosborne5131]

cost.

[@user-xi8rx7sn8h]

Love physics. So much possibilities. Only enough to experience some. What a joy.

[@michaelccopelandsr7120]

Neil and Chuck for 2024

[@beargillium2369]

They're both far too intelligent to be politicians

[@edwardcalvet]

They'll get my vote

[@xBRVTALx]

Have you heard Tyson’s thoughts on COVID? He’s an authoritarian.

[@beargillium2369]

@@xBRVTALx uh can't say I have, care to provide a link?

[@dsnitely]

Did Tyson chicken get Covid? Mmmm chicken

[@TheAnonJohn]

The other time I got in a bakery, there were 3 employees available and noone offered to service me. I am already invisible!

[@Sammasambuddha]

"Bakery" riiight....

[@hotrodpawns]

This discussion opens up so many questions to ponder, like for example, since humans live in a 3 dimensional world, how do we know or not know, if there are beings in the 4th and up dimensional world/s, that are invisible to us, but we are not invisible to them, because they can see from their dimension down to the 1st dimension, but we as humans can't see past our own dimension. These are the kinds of questions i ponder.

[@Sammasambuddha]

Sounds^ more like answers. 👍

[@r.m10234]

im invisible already 🔥

[@JMoroccoMisterBoy]

Ms.Negin Farsad, Messrs. Greg Gbur & Neil deGrasse Tyson : Tks. much appreciated.

[@LibraTransitioned]

Love this topic.

[@RASTA_20CM]

The way he puts me to sleep is the most, and l do listen to everything he says and try to imagine and to understand....best way to fall asleep everyone 👌

[@TorQueMoD]

I have to say that Negin is a great alternative to Chuck. I hope we haven't seen that last of him, but it's also cool for him to have a stand in every once in a while :)

[@janewayofchaos3255]

This makes me wonder, if there is intelligent life out there, is it not possible that they found a way to remain invisible to the tools we currently use in our search?

[@adamboise3907]

I doubt they need to, or tools still aren't that good to find life like our own, but they are getting better.

[@67kemo]

I'm still on the fence about the existence of aliens, but I'm 100% certain that if they do exist, any time WE spot them is the result of an error or miscalculation on their part. It's inconceivable to me that a civilization advanced enough to travel here in the first place, would not have the ability to keep themselves completely hidden from, in their eyes, the primitives. It's almost as bad as the arrogance of believing we're the only intelligent beings in the cosmos. A nearly uncountable number of planets, and you're gonna try and convince me the universe only ever got lucky ONCE! Got a great deal I'd like to offer you on a bridge; bargain basement prices!

[@dsnitely]

Or they can live in another dimension or level of subspace, and so they're invisible to us but we can be seen by them

[@67kemo]

@@dsnitely Great point!

[@dontactlikeUdonkno]

Wouldn't only the material be invisible? Like you're holding up a transparent cloak in front of you. Love the content

[@TorQueMoD]

I suppose it would depend on how the cloak works. If it bends light around itself, then anything on the inside would also become invisible. Same reason why we can't see through buildings etc.

[@remischmitt9308]

Nice discussion. the oldest mentioning of Invisibility i know of is in the story of Siegfried in 'die Nibelungen'. He uses something called "tarnkappe" he got from the King of he Dwarves to become invisible. the literal translation of tarnkappe is hat-that-cloaks. Of course it works by magic and not technology.

[@damienganesh8234]

Lovely Juberly

[@TheRealSkeletor]

"Any sufficiently advanced technology is indistinguishable from magic." - or - All magic is just technology we haven't discovered yet.

[@HaggenKennedy]

Das Nibelunglied is only from the 1200s. The first instance of an invisibility device we have is Plato's "Ring of Gyges," an obvious source of inspiration for Tolkien.

[@jeffosborne5131]

Wonderful episode.

[@frankwestphal8532]

This was a good one. I thought Greg had good insight on the ideas/[practices of specifically structured material manipulating light.

[@KevinHallSurfing]

There's an old fashioned, almost vintage, invisibility/cloaking device? Like used for the "Predator" movie maybe? And I thought it was just blue screen editing.

[@mcdziubek1]

Where is Lord Chuck?

[@blessedveteran]

I miss him too 😢

[@Sammasambuddha]

Legally, couldn't bring him in on this racist topic! He'd blow up!

[@67kemo]

There aren't a ton of subjects in this channel I'm interested in, but the ones I do watch are always both entertaining and enlightening. Yeah, I'm a Tysonite! Sue me!!

[@filipmilovanovic8942]

Black and white room: probably not fully possible because of light bouncing around, but, take a projector and beam out a picture of the room with colors modified in just the right way. P.S. Had to note Greg's passive-aggressive taunt of Neil via the Pluto model in the background :)

[@abdirahmanhussein5214]

Have been thinking about this yesterday, How i could become invisible. Thanks for the enlightenment.

[@Sammasambuddha]

Turn off the lights.

[@animeshsrivastava2398]

I wonder why has Dr Michio Kaku never appeared on this show.

[@anorak-adenoids]

Amazing title, I defo never want to be seen in public with these two: "How Not To Be Seen with Neil deGrasse Tyson & Greg Gbur"

[@youngblack253]

I wonder if Vanta material could be made into a mirror. Vanta has an all absorbing characteristic and obviously a mirror has reflective properties. Can the two coexist?

[@susiesuh1418]

I confess, I don’t watch star talk unless Chuck Nice is cohost. If Dr Charles Liu is on then I watch it repeatedly.

[@subtleblows]

"and therefore..." love it

[@CW19941]

If only we could figure out a way to bend light around yourself like The Predator 🤔😂*Ourselves, not yourself.*

[@D__Cain]

Great cohost !!!

[@chefRyan38]

I'm 38, single, no kids, no career, no reason to exist. Yes, people can become completely invisible it just really sucks.

[@blessedveteran]

What I heard here is you are free without any strings or drama.... perspective is key in life 👍

[@Sammasambuddha]

Are you...BATMAN?!

[@chefRyan38]

@@blessedveteran the grass is always greener

[@chefRyan38]

@@Sammasambuddha na... I'm Catman

[@Palidine4M0O]

If you have an active system that reads the incoming light and then generates that light in the direction on its other side, then you can span/sniff that info and still SEE using that information, so in an active invis cloak, you're fine. And with some passive, you could have an energy source that buffers and increases the light on its way out to the other side, but shears some of it off in order to SEE.

[@KiingDa3rd]

I've started feening for startalk. I look for new episodes daily

[@rogertulk8607]

I achieve invisibility from time to time when I am at a party with certain members of my family and nobody looks at me or talks to me. It's easy!

[@archbishoprichardforceginn9338]

Holey Eternal Omnipresent Greetingz

[@crystalferrai]

Regarding the question about turning things black and white with lighting, it is possible they were referencing how everything appears grayscale in low light. Human eyes need a certain level of light before they can perceive color, but can see contrast at a lower light level. Within the range between the two, things are generally perceived as grayscale, which people occasionally refer to as "black and white".

[@katanaridingremy]

I think this idea works better when viewed less through the lens of being invisible and more in the lens of being camouflage. Like a scuttlefish or octopus changing is skin, texture, and pattern to match its environment. Obviously, it works best in the water, sky, or space opposed to land.

[@ManaBDew]

The doodler story with markers black and, white a different possibility on that. Ty for sharing friends

[@zero11010]

As more and more vision becomes digital in nature this may open up new avenues for invisibility. If the US builds a camera system it may be beneficial for the US to have the ability to put people in specific clothing or vehicles in specific paint that trigger the software to remove that thing from the recording.

[@ClintonFerrara]

The elvin cloaks in lord of the rings have always fascinated me. I’m a photographer so I think 50% gray makes things invisible.

[@T3aR3Drop]

PoP quiz, are fan's of Refraction also waves? Does it bend time? So gravitational lensing? What possible materials could it be made of?

[@upupuptheziggurat.liketysplit]

16:20 SSV Normandy has a fantastic written version of this thermal sink idea, its fiction of course, but it highlights the point nicely as a special operations vessel

[@danmarius]

When you are talking about the light going around the object and having a speed greater then the speed of light in vacuum I am thinking about the Predator camouflage.

[@IWasAlwaysNeverAnywhere]

however after invisible light spectrum the wavelengths are so small the yes you would need a lot of layers but they would be extremely small so that material though layered would still be relatively light and manageable i assume

[@SirNecro]

On the old CRT style televisions you could take all of the colours out of the picture by adjusting the gamma saturation. Perhaps this answers that question?

[@robnol84]

There’s a thing similar to the prisms he was talking about that uses a large fresnel lens to bend light around something.

[@lydiafaye494]

With the seeing in black and white, with the way rods and cones work in our eyes (rods being our night time vision and lack the ability to mediate colour), wouldn't just turning off the lights/excessively dimming light cause everything to be seen in black and white? Kind of like going for a nature walk at night during a crescent moon, or how aurora from low level geostorms are seen as white or very low colour saturated lights

[@OP-rp4hc]

Hi Neil i am passionately attracted towards your documentry Please make a documentary on CORAL REEF BETWEEN SHRILANKA AND INDIA

[@mizzmy929]

Let's go!!!

[@AyushSingh2B]

Just Stand INCREDIBLY still !!

[@smoothaswater]

Solution 1 for black and white room So making a black and white room is possible. I have done it on a stage before with dancers/actors. This is how I did it. There is a backdrop we call a Cyclorama. This is typically as pure white as we can get. Being white the cyclorama will reflect many colors. There are two main types of light on a stage. Downlighting (light that is shining from the front to the back of the stage) and backlighting (light that shines from the back to the front of the stage). If I shine a weaker down light and a much stronger backlight of the same color. What will happen is the backlight will over power the downlight which will make you only see the object as black. We normally do this with a setting of about 10% downlight and 100% backlight. The 10% down light is there to make the object have cleaner lines. Because if there is too much backlight and no downlight the backlight will bend around the object and make it appear fuzzy.

[@taiguy53]

8:32 I'm sorry, but the transition to Niel while Greg was explaining meta materials was just comical 😂

[@rationaltrekker2509]

Being a Trekker, I can't help but think of cloaking devices in the Star Trek universe. It's not how they might work, but their limitations even in that fictional world that intrigues me in the context of this real world presentation, especially after the question about energy absorption leading to an object radiating in the infrared spectrum.. Several times we see Federation people detect a cloaked Klingon or Romulan vessel. In Deep Space Nine there is concern about whether the Jem Hadar will be able to see through the Defiant's cloak if they are at warp. Would it ever be possible to be cloaked against all areas of the electromagnetic spectrum, even if you could be in certain ranges?

[@oo7sk8punk]

being unseen is often as simple as just being seen as something else, augmenting perception is easier than erasing it entirely...if you think about it, seeing 'nothing' would be odd, especially if that nothing tries to interact with the environment.

[@yesyes_uk]

About the black and white room, you could illuminate it dimly enough so that our colour receptors in our eyes don't activate.

[@jeffosborne5131]

Have worked on this idea for decades. The answer is to have mini lens/transmitter [l/t] devices woven into material (stiff or flex) and co-ordinate via cpu, equal and opposite alignment by internal navigation, the operation of the l/t opposing. The devices resemble tiny fish scales or sequins. Thus whatever light is sensed and sent 180 degs. with little delay or distortion. Any and all thoughts welcomed.

[@jeffosborne5131]

Another is electro stimulate paint/ dye to mimic and obscure, as the cuttlefish does so wonderfully.

[@dijanagugicbokun3833]

It would have been cool if the guest professor just left an empty chair to be in the web cam shot and talk to them during the entire conversation off camera…. Nonetheless….super fun interview! Thanks AGAIN

[@ArtSurvivesArtist]

When they were talking about invisibility in a room, Chuck chimes in, "You guys, you're referring to a light switch. Come on!"

[@murderedcarrot9684]

After learning the beauty of isolation. Meditating and the principles of bland, and mastered the techniques of the boring you will achieve the holy state of invisible.

[@HaggenKennedy]

Everyone nowadays: Cloak of invisibility = Harry Potter Me: Poor Sheila. Completely forgotten.

[@genauso_ravi]

If you light up the room with a light flickering at more than flicker fusion of eyes, one color at a time everything would look colorless 🎉

[@jamesgreenler8225]

Ever since the military started using thier new FLIR pods they started being able to see UAP craft that we could not see before even with systems that were nite vision. Thats interesting and maybe a clue as to what is happening.

[@Breeeeeeeeeze]

Neil, if you had an actual studio with face to face interaction with different guests, discussing interesting topics about science and universe, you could actually become the next Joe Rogan in KZbin. Just saying, it would have such a greater reach. Thanks for the content and all the best!

[@jjbud3124]

Would this explain the object I saw a few years ago that was a featureless gray round flat object against a blue sky? it was travelling and at the time I thought "cloaking?" It almost appeared to be part of the sky except for the lack of color. Just before it went out of sight, it reflected sunlight. This was about 5 years ago. What do you think? I think we/or somebody already has cloaking.

[@stevekirkby6570]

First I heard was the Startrek 'Cloaking Device', I believe used by the Klingons...

[@jamesgreenler8225]

I've seen footage from the earthquake tsunami in Japan in 2012 that shows a water front and a hovering craft that goes from a hovering and moves into the water and disappeared. Before the craft moved you can see what looks like sections of it sequentially light up like turning on a fluorescent light.

[@aldomandovani]

Fun fact the C4 corvette from the 1980s was designed in order to make it harder for police radars to see it by makeing the Radiator cross section smaller

[@DexLuther]

The visible light cloak is already kind of a reality, and the prism effect isn't that much of a problem as long as the object isn't moving. The prism effect comes from the fact that light hitting the edge of the object is less curved or not curved at all compared to the light hitting the center and having to be bent around the object, which causes a delay. To deal with the delay in light bending around the object and the prism effect, I think you could apply the inverse delay to all the light. The light going through the center of the object would be delayed more than light hitting the edge of the object, so you add more delay to the light hitting that edge to make all the light hitting the object project at the same time. You'd get rid of the prim effect and be looking at a flat image. It's basically like the clocking device the Predator has. As long as they aren't moving they are invisible. Your eyes don't know (or care) that the light it's receiving is technically delayed a couple fractions of a second. To your eyes, it just looks like normal light coming in a straight line like it normally would. The prism effect comes in when the cloaked Predator is moving too fast, which throws off all the light curb and delay calculations your material or system would have to do. The same principle applies in the show Stargate Atlantis, which Dr. Tyson had a cameo in, when they turn the city's shield into a cloak. The city doesn't move, so it's not impossible to delay the light hitting the edge of the city as long as the light that hits the center of it. That way all the light reaches the observer at the same time.

[@WestExplainsBest]

Soooo you're telling me Harry Potter was a lie???

[@carlz28]

Fake news!

[@mykeljmoney]

I don’t think anyone is saying that. It’s a documentary, isn’t it?

[@Sammasambuddha]

Calm down...just the cloak was green screened...for the camera. 🫣

[@rjtablet]

Adaptive camouflage, like how the octopus does it would be extremely close to invisibility.

[@XennialGuy]

I knew a guy whose company produced that paint that was used on stealth bombers. They were trying to get it to be used on solar panels, because it had a very similar effect of allowing the solar panel to absorb more of the solar energy. But the US defense department would not allow that use under the contract.

[@mr.ch4rli3_]

Yay number 1

[@aldomandovani]

The biggest fear of modern folks, they rather be infamous that invisible

[@waynegosson1793]

I wish they introduced tag team presidents. If so these two would make a great team

[@anwaypradhan6591]

Well, there are many positive aspects of infra red radiations. Some of the Household appliances such as heat lamps and toasters use IR radiation to transmit heat, as do industrial heaters such as those used for drying and curing materials. A common example of an infrared (Ir) device is a TV remote. However, infrared is also used with computers and devices like a cordless keyboard, cordless mouse, and infrared touch screen. Most computer wireless devices (e.g., wireless keyboard and mice) used with computers today are using Bluetooth and not infrared.

[@smoothaswater]

Solution 2 for a black and white room. Is to phase shift the light shining on objects. How this works is. You must be wearing glasses that only let in one phase of light. If an object is designed to phase shift light that bounces off it to a phase which your glasses do not let the light through it will appear black. Everything else will appear normal. In this case with a black and white room just have everything white with normal vision in the room. Have some objects that phase shift the light bouncing off them. Put your glasses on and everything that is phased shifted becomes black every not phased shifted is still white.

[@jamesgreenler8225]

Very interesting conversation. Perhaps the best way to make something invisible is to surround an object with energy because the only thing smaller than a photon would be another particle of energy.

[@tamtamtt63]

I'm not a scientist or physicist and know very little about it, but I've been able to achieve invisibility without even trying. Can we have Chuck and talk about stars back please?

[@isaacweingarten]

31:37 in CES 2023 Asus should those laptops with 3D screens would this help for the cloaking panels?

[@iammaxhundred]

What if you had it so that the observer is looking at you through lenses and making you smaller (like looking backwards through binoculars)???

[@margaretbloomer9001]

🤩Klingons on the Starboard bow....

[@baadbeats]

Where’s chuck

[@isaacweingarten]

6:26 if windows are not transparent for infrared light how can my night vision camera’s sensor that is covered in a grass see in infrared?

[@TWX1138]

Nice followup to H.M. GOVERNMENT PUBLIC SERVICE FILM No. 42 PARA 6.

[@STSWB5SG1FAN]

@43:10 This remind anyone of that whole internet hubbub about the dress from a few years ago?🤔😏 Some people were saying it was black and blue, others were saying it was white and gold. Also @40:40 We are finally starting to learn what phaser resonance frequencies are.

[@TergoLive]

Science of the “invisibility cloak” 😉

[@ospididious]

Sometimes, I swear I turn invisible. I'll be standing right in front of someone, they'll look right at me, then they remark that I just appeared out of nowhere, even though I had been standing there for X amount of time. Then again, I have also experienced temporal and gravitational fluctuations. Not at the same time, but all of the above on multiple occasions. I need to talk to a physicist about my life...

[@andrewcrookston6663]

Where’s Chuck??? He invisibly attending? 🤔💭

[@aaronh920]

More StarTalk please.

[@bradleyroissetter6796]

I havnt seen chuck in a while, anyone know if he's coming back soon ?

[@robertplant9710]

Yeah i miss him

[@pejko89]

He's in there, just trying out the new invisibility cloak