Space Fan News #51: Dark Matter Galaxy; Most Distant Type 1a; Planck Completes Its Mission

[HuskerSeaofRed]

I matter and I'm not dark at all.

[BenjaminSteber]

I think there is no dark matter. Video in my profile.

[1robon]

why the rush to conclude that this is proof of dark matter? couldnt it just be a distortion of spacetime due to large scale effects of the known forces. also looking back in time things might appear differently than expected.

[Baronstone]

Yeah a galaxy thats 120 million solar masses and invisible? Thats not dark matter, its a darn black hole.

[sbergman27]

@Baronstone "thats not dark matter, its a darn black hole."

The mass distribution is completely wrong for that. This is what? The 10th time I've had to point that out here? There is a substantial difference in the signature of that amount of mass distributed over the volume of a galaxy & that much mass concentrated at a point. 76 yrs of data & independent lines of reasoning forced scientists to recognize DM. But today we have armchair DM deniers who seem to have missed the history.

[Battery9876]

Just to say that in the case of the orbit of a planet around the sun almost all the mass of the SS is in the sun so the theorem in fact applies.\

And I found it! watch?v=ERjkSbdn6-4 at 44:00. It's Newton's theorem.

Another thing I was thinking about is that if you use a stick to measure the galaxy, when space expands the stick expands too so does the galaxy get bigger measured with that stick?

Anyways sbergman27 I think we should conclude that we don't know.

[Battery9876]

I guess this theorem is valid for symetrical objects, like a disk of matter. However, as you say galaxies are not completely symetrical. Also gravitation travels at finite speed (light speed) apparently so it might have an effect on the validity of the theorem in that case.

Honestly I don't know, but I am not quite sure that you can infer the mass of the galaxy from just our sun.

For other galaxies sometimes they can use gravitational lensing to determine the mass but with our galaxy we can't.

[Murphis55]

Keep up with your broadcasts I love hearing what you have to say. Nerds are the best! I am attempting to get going with amateur astronomy having purchased a Nexstar6. Great fun!

[Nekobe24]

"It has gravity and that gravity bends light that travels through any dark matter that might be present. When it does that we have it. It is betrayed." -- I love that line XD That and the TNG reference are awesome.

[JamezGotSwag]

Feel like a nerd watching this but who gives AF, It's so interesting!!! You sir have a new sub:)

[TheisticThinker]

@JamezGotSwag The sad thing is that in nowadays, someone who actually cares about something greater than him/herself is called a 'nerd'. You are 'normal' if you just doesn't care or isn't interested in Science etc. It's kinda sick. :/

[Lukederpa802]

I was watching your video's with my headphones, and the video's audio is louder on the right, after awhile it got to my head so i switched to my speakers. then my girlfriend heard and she too became addicted to your video's :P. love your video's thx!

[sbergman27]

One thing that should probably be made clear is that there is nothing particularly special about this dwarf galaxy other than its fortuitous alignment with the more distant light source when viewed from Earth. Baryonic matter makes up 4% of the matter in the universe. DM makes up 29%. DM out-masses baryonic matter by over 7 times. Most or all galaxies are "Dark Matter" galaxies. Including our own Milkyway.

[o00Tigger00o]

Yeah why can't it be a black hole?

[sbergman27]

@o00Tigger00o Because the mass is distributed over too wide an area? Because even the largest supermassive black holes thought to exist would be orders of magnitude too small to account for the effect? Because black holes, despite their name, aren't really black, but emit gamma radiation which we could detect? If positing that it may not be DM, why immediately think of a BH, & not some other form of MACHO?

[aleksandarrodic]

I'm confused about the dark matter galaxy. Couldn't it be a black hole?

[MsWhitekanna]

The bloopers at the end made me laugh this time :D

[firepower01]

So hard to not press the like button

[Barnicalsify]

@firepower01 Like!

[MrPlatonist]

tip from a sound engineer - convert your sound in the vids to mono. having it in stereo like this, makes it sound like you're far to the right of the video. if you dont know how to do it, Google is your friend /new spacefan

[SomedaysDreamersBC]

LOL am more of a star wars fan (c= and firefly. Star Trek is good too though.

[chrunks101]

6:21...but that doesnt mean we cant find-HUU! HUU!!

6:24 HIGH PITCH! ...but that doesnt mean we cant find HUU! HUU HAA HAA HA HA HA!!!

6:28 ... and that ring... "EPIC SCRATCH" HU!

6:30 ... "DOG SCRATCH" erhm!

6:33 ...witch is much farther away... "BRAIN FART" from the dwarf galaxy witch is closer...

EPIC VIDEO MAN LOVE THE INFO AN HUMOR!!!!

[StraussBR]

Tony please help me understand this if you can

sometimes we atribute objects like the one you described in 01:27 to dark matter, but couldn't phoenomena like this happen due to super-massive lone, dark black holes?

wouldnt this make sense when describing bservations like that one?

[sbergman27]

@StraussBR No. The mass distribution is completely different. DM represents a huge mass distributed over a huge area. Even supermassive BH's aren't all that massive compared to a galaxy. & they are point sources of strong local gravitational fields. It would look different. Plus, all the data regarding structure formation & galactic rotation points to 1 conclusion: Most of the mass in our observable universe is distributed diffusely in halos of something that doesn't interact via EM.

[StraussBR]

@sbergman27

very interesting, thanks for clarifiying

[LongDriveChamp03]

This is the first time I've seen his face and before then I always imagined him with a goatee. I was right!

[IAMoraes]

So...  that was "Wesley's Bubble" that you saw, uh? Me too...

[PlateauEast]

why don't you have a real tv show?

[SomedaysDreamersBC]

@PlateauEast Co signed.. I'd watch it...

[pragma1700]

I love that you put outtakes at the end. :)

[kent6608]

Great super video as always. You're on of the best on YouTube. Greetings from Sweden

[lmac7633]

did u usede to be an astronomer

[HCLivess]

thank you for improving the sound quality!!!

[Battery9876]

Regarding dark matter, one thing that is weird is that space expands BETWEEN galaxies, not inside. Could dark energy be a side effect of this? For instance could dark energy sort of push on the exterior of the galaxies, and curve space more on their outer "shell"?

[sbergman27]

@Battery9876 No. That's just basic General Relativity & is well understood. It's also widely misunderstood. In fact space is expanding in your living room @ the same geometric rate as between galaxy clusters. Objects bound by forces (like our galaxy or solar system) don't expand with the space they are in since gravity is strong enough to compensate. YT search for 'casseopeia expanding universe' to find "The Expanding Universe". It explains it well. casseopeia expanding universe

[Battery9876]

@sbergman27 Well, I am still a bit confused. From what I understand there are 2 lines of thinking here: one , which is what you say and what is described in the video "The Expanding Universe" which is that indeed gravity is strong enough to compensate. The other is that the expansion of space is completely transparent, gravity is a force in 1 over d squared and that's it, that's what Sean Carroll says in the video watch?v=vUNtO2r_-eo at 26:00.

[Battery9876]

@Battery9876 However, from what understand, space is a medium that can be curved. The theory of general relativity says that matter can curve it. But I imagine that if new space is created it will also change its shape.

If that's correct, the stars at the periphery of galaxies will feel the expansion inside the galaxy and it will have the effect counter gravity to some extent . The result is that gravity will be weaker and that a lower speed will be required to stay in orbit around the center.

[Battery9876]

@Battery9876 The magnitude of the effect of the expansion of space would be roughly proportional to the distance from the center of the galaxy. This could explain the discrepancy with Kepler's laws as we get further from the center.

Also, if this is correct, it could explain why the first galaxies were small. They were small because the expansion of space was very fast, and everything was spreading apart. Later the expansion slowed and large galaxies could form by coalescence of smaller ones.

[Battery9876]

@Battery9876 This being said, I know that astronomers have probably good reasons to think that dark matter exists. I probably misunderstood something somewhere.

[sbergman27]

@Battery9876 I've never been quite sure what Carroll was saying there. The issue is highly confused by his inclusion of a black hole, a region of space cut off by its schwarchild radius. The Earth's orbital distance *is* very slightly larger than it would be without expansion. But immeasurably so. In fact, the space in your living room is expanding by ~10% per billion yrs. But the EM bonds of the matter in the room hold the distance between the sofa and coffee table (almost) fixed.

[Battery9876]

@sbergman27 To tell you the truth I listened to Carroll's explanation many times and I am still not to sure I understand.

Btw I made a mistake in my previous posts,the stars at the periphery of galaxies move too fast not too slow that's why they need dark matter!!

If the expansion really has an effect,this makes me wonder if galaxies wouldn't change in size when the rate of expansion of space changes.The effect of the expansion is very small at our scale but it might be large for a galaxy.mmh.

[sbergman27]

@Battery9876 Grab a pencil & napkin & let's check. :-) The expansion rate, known as the Hubble constant, is around 70 km/sec/megaparsec. Our galaxy is ~30000 parsecs across, or ~0.03 megaparsecs. 70km/s/mPa * 0.03 mPa = ~2 km/s.

For comparison, the escape velocity of our galaxy is ~1000km/s. Gravity is acting to offset the 2km/s expansion between opposite ends of our galaxy. Based on that how much larger would you guesstimate our galaxy is due to spatial expansion? Is it expanding?

[Battery9876]

@sbergman27 From what I've read we don't know for sure the escape velocity of the galaxy. John Matters on that: watch?v=H6nP8m4QRUA. Also I have found another research paper from NASA which says 525km/s.

Also I think I would use the radius of the galaxy, not the diameter, so that would be 1km/sec, not 2.

In any case, ve=sqrt(2GMR/r) so r=2GMR/ve^2. Using your numbers, a change by a factor of 1.002 of ve would translate to a change of 0.4% of r.

In the early universe it might have been different.

[sbergman27]

@Battery9876 Vₑ depends on starting position. ~500km/s is from Sol. 1000km/s is from the GC. I really should have used Vₑ from the edge, ~50,000ly out: ~400km/s. But the point is that local gravity swamps spatial expansion.

That said, we know from observation that Sol orbits the MW's mass center with a period (P) of ~200m yrs @ a distance (A) of ~1.7E9 AU. M=A³/P². So galactic mass is ~120E9 solar masses. Not sure why anyone would say we don't know the mass of our galaxy.

[Battery9876]

@sbergman27 I think there's a theorem - Gauss theorem? - check Susskind's cosmology lectures it's explained somewhere - which says that the gravitationnal effect of everything outside your orbit cancels out. If you use the speed of the sun around the center you will only find the mass within its orbit.

Also there may be a lot of DM outside the "luminous matter of the galaxy". According to the theorem you can't feel it. So you can't really know the mass of the galaxy and its escape velocity.

[sbergman27]

@Battery9876 "which says that the gravitationnal effect of everything outside your orbit cancels out."

That works for idealized charged spherical shells. The matter outside Sol's orbit is not a spherical shell. It's a disk. When Earth's orbit about the sun takes it slightly closer to the galactic center than is the Sun, does the Sun's gravity suddenly get cancelled out and not matter any more? Of course not!

[GShock112]

Honest the riddle of dark matter is weird... it's hard to spot even exoplanets... whatever is not a star is mostly not visible, why dark matter should be something new and unknown then?

[sbergman27]

0:28 It gives me pause to hear things like "Dark matter doesn't interact with us in any way". It most certainly does. Gravitationally. & that's a perfectly valid way of interacting or detecting something. It's that sort of EM-chauvinism that has many laymen thinking that DM is just made up to fix a broken cosmology. We never had any right to assume that all particles with mass should also interact via EM, strong, or weak forces. DM should not be all that surprising. My bet's on the neutralino.

[Deadmo]

you should have kept the last blooper for the final product haha :) keep us on our toes ya know?

[pyrea17]

I love it when people say redundant things 6:27 and then realize it right after

[MarkArandjus]

I remember that episode :P

[sbergman27]

@MarkArandjus Well, after the computer told her that the Universe was a spherical region 1000 meters in diameter, it didn't take an Einstein to spot that there was a problem. ;-)

[SpartanStig117]

Tony if you like Star Trek you might like to check out my video Star Trek First Contact in 5 seconds :-)

[necrom666]

I'm sick of my boring facebook friends who talk about all kinds of banal subjects. Any space lover wants to friend me it would be nice. My name is Michael Theisen, from Chicago Illinios. Just put Space Fan in comments and i will accept you.

[Bobajobimus]

Always a pleasure

[Cogency1]

The very end reminds me of a Jackie Chan movie :O)

[SmileForward]

Great update. Really enjoyed this one. Keep up the fantastic work!

[Kariakas]

Very interesting as always, you should have your own TV show or at least be invited to news programs on a regular basis. Your videos are highly appreciated.

I guess dark matter is invisible in every way but doesn't it have to have mass to have a gravitational effect on light? If it has mass wouldn't be able to interact with it physically? I'm still trying to fully grasp our understanding of dark matter.

[TheeJediSmurf]

just wanted to say thanks for taking the time to inform us of some of the greatest discoveries man has ever made....... i wish i could have your job....exactly what do i need to do.....im a cook cuz work around here is hard to find......its a good job but your job is way way better!!!

[JadeChaos]

I'd love to know how dark matter has gravity without "normal" properties. I saw the "bullet image" that was captured showing dark matter passing through matter, amazing

[tdarnell]

@JadeChaos Good question, but I think most astronomers would be happy just knowing what the heck that stuff is in the first place. :-)

[ahg337]

@tdarnell Yeah 'dark matter' is really just a placeholder term. The truth is, scientists don't know what it is, but some unseen 'matter' has to account for the extra gravity that is detected. We just don't know what it is yet.

[VERPLAK85]

@tdarnell I wish you were my father... I watch you videos every night before bed... eventually falling asleep. People like you are real heroes to me.

[TotalImplosion]

@JadeChaos There is no such thing as dark matter. Study the work of Nassim Haramein, the guy who solve the unified field riddle.

[sbergman27]

@JadeChaos There are 4 basic forces. Electromagnetism, Strong, Weak, & Gravity. Everything is affected by G (both mass & energy) because G is the very geometry of space-time. Protons/Quarks participate in all 4 forces. Electrons participate only in G & EM. Neutrinos only participate in G & W. Dark Matter participates in gravity. Does not participate in EM or S. And may or may not participate in W. If so, it's like a neutrino, but heavier. In this context, is it really *so* mysterious?

[pulsas28]

shit! with that of its gravity, gravity is not at all ....

images of galaxies bends department gave the body's magnetic field ....

photon, an electron can only dart magnetic fields ....

[andy7666]

Awesome stuff, keep it coming!

[bicnarok]

interesting stuff, a shame we cant fly about out there and see things first hand.

[CyrilleParis]

Thanks sooo much! Your vids are one of the weekly entertainment I always look forward to. And I learn soooo much. Thanks a lot! Thanks a lot!

[LZantho]

I believe that is one galaxy by itself. Just like when the quasar were this cover... oh scientists and you one-sided view of things.

[cjw1010]

ok i have a question i hope someone here can answer. Why do scientist think there is no already existing antimatter in the universe, and the only way to study it is by creating it. I watched a show on the science channel saying that one possibility was that the universe and an antiverse collided but somehow the universe was able to produce more matter? How is that possible, and why wouldn't and antiverse have the same amount of matter. The part about it not occurring naturally is from my teacher

[TheHemsworthboy]

@cjw1010 the reason we cant see smell or touch dark matter is because were made of the opposite type of matter, basically its like a mirror trying to see itself in a another mirror, i hoped it helped but you will be better off doing some research, its quite hard to explain this in a youtube comment.

[Hooya2]

@TheHemsworthboy No, it's not that we're made of the opposite type of matter. I think you're thinking of antimatter, which is different from dark matter. We don't know what dark matter is made of, but it's probably just electrically neutral matter, like free neutrons. We can't interact with it because it doesn't absorb photons, nor is it repulsed by the electrons in our atoms; it has to hit an atomic nuclei to effect normal matter, which is very unlikely.

[cjw1010]

@TheHemsworthboy i understand dark matter as a whole, and dark energy but i dont understand antimatter thats what confuses me.

[Hooya2]

@cjw1010 When antimatter collides with normal matter, the two destroy each other, converting into pure energy. If there was a lot of antimatter in the universe, we should be able to see it colliding with normal matter, but we don't.

Theoretically, matter and antimatter both should form naturally from energy in roughly equal quantities, so our universe should have equal amounts. Scientists don't know why our universe is so matter-heavy.

[cjw1010]

@Hooya2 I understand they destroy each other completely and make pure energy, but in (i think) the first season of through the wormhole they talked about when our universe was small it had a mirror image of a anti matter universe and they collided and somehow our universe produced more matter, and what we have in our universe is whats left over. I dont understand how our universe managed to produce more, is there an unequal ratio im forgetting?

[cjw1010]

@Hooya2 Also could it be that what i said about the earlier universe and its anti version didn't happen yet and thats why we dont see and anti matter? One last question sorry im just really curious. How would anti matter come into existence? Or is that not known?

[robbiethewood]

I wish I had some dark matter in my tool box

[GMSlash]

@robbiethewood are you talking dirty? ^^

[ScottishAtheist]

Love it!

That TNG episode is one of my faves.

[gigacoasterfan]

The dislike bar is like dark matter. You can't see it but you know that it's there.

[HerbsmanRevs]

Hi Tony. Just wanted to say that I've been watching these vids you put make for a few months now but haven't said thanks... so a big thanks from me! I look forward to and enjoy every episode. Keep 'em comin' buddy :)

[iaov]

Thanks. Great stuff.

[WILDLEGHORN]

Cool :PPPPP

[Eztoez]

awesome



[LVskywalker]

Ah, is it a bad sign that remember that TNG episode? :D

Thanks Tony.

[vaironxxrd]

Nice information & comedy at the end

[BjornSeverinLarsen]

All you really need to do, to keep updated and being amazed by space and astronomy is to be subscribed to this channel and Spacerip's. So easy and so awsome - hopefully SOPA and PIPA won't break YT

[GoreTorn16]

That's a looooooooooooooong ways away! :O

[maggru91]

This is great stuff. The world needs more smart, talented, articulate people like yourself who can educate the masses about the wonderful nature of our universe.

[TheHunnyhillbees]

Great stuff - as always. Thanks again!

[KelzLife]

Tony!!

[SilverIcetail]

You, guy, is what I enjoy watching. I'm really happy I subbed to your channel before you started with the spacefan news! Love this stuff more than black holes!

[Alienalloy]

and as always a pleasure..

[alienfast]

Yet another informative, interesting and genuinely wonderful video! Thanks a lot for this, it's much appreciated! Always looking up :)

[supergsx]

Why can't dark matter just be matter that isn't emitting light? We can't see that stuff either.

[Melee2Kil]

@supergsx Because then it could touched by regular matter. Which it can't.

[supergsx]

@Melee2Kil From my understanding, the only evidence for "dark matter" is the angular velocity of the outer edges of galaxies. It seems like a huge assumption to say that it is some kind of mysterious, invisible, untouchable, and completely undetectable mystical substance that is all over the universe without any scientific theory behind it.

I'm just wondering if, with all the new understanding of exoplanets, dark matter could just be exoplanets, or dim stars. Or even small black holes.

[RyuDarragh]

@supergsx: That was just the first clue. Gravitational lensing and models of galaxy collisions only work in some (now many more observed) places we've observed. Most galaxies show differences. Also, gamma ray light from some really distant places are oddly delayed - spread out in a manner consistant with different arrival times depending on the energy (frequency) from the same events. Dark matter is truly ubiquitous. Some speculate it may fill the universe.

[Melee2Kil]

@supergsx Yes possibly, I guess it's just another way of saying there is too much gravity here for the amount of mass we have.

[sbergman27]

@supergsx The evidence is overwhelming. The acoustic oscillations visible in the WMAP data clearly indicate DM. Exoplanet mass is orders of orders of magnitude too small to account. MACHOs exist, but clearly can't account. Consider that DM represents over 7x the "normal" mass in our Universe. We had no basis for assuming that every massive particle must interact via EM. In absence of evidence it made sense not to hypothesize any. But denying our current data would be unscientific.

[supergsx]

@sbergman27 I'm not denying the current data, nor am I denying the current (widely accepted) hypothesis of what is causing the effects of dark matter, or what dark matter is. It just seems to me that some scientists may be a bit attached to this idea that dark matter is an undetectable substance permeating the whole universe when we don't know that yet, and that ALL unaccounted mass is caused by dark matter, when a lot of it is probably caused by MACHOs. There just needs to be more science.

[sbergman27]

@supergsx "There just needs to be more science."

Teach the controversy? Even the MACHO researchers, by & large admit that MACHOS can't come close to accounting for the mass. Even the scientists working on MOND theories admit that DM is necessary in addition to MOND. And this is based upon the hard data.

Saying DM's existence needs more science is like saying more research needs to be done before we discount creationism because we just don't know at this point. It's an absurd position.

[supergsx]

@sbergman27 This is no longer an argument. You understand what I'm saying, and I understand what you're saying, so let's stop playing this dumb game.

PS: If DM's existence is so certain, then I wish the scientific journalism community would give just a bit more information about it. We're all in the dark here.

PPS: I wasn't talking about DM when I said "there just needs to be more science." No scientist would ever disagree with that sentence. There ALWAYS needs to be more science.

[noodlerII]

Kirk moves at :05.. Nice.

[rccaulfield]

Amazing info! Thanks from Ireland!

[TheEVILutionist]

@rccaulfield Don't forget to have a gander for the Aurora this eve! I'm gettin my ass out of Dub for the eve, as long as it's clear of course.

[rccaulfield]

@TheEVILutionist Yea Donegal is the place to be! Great pics from Liffen on Google images!

[Debbie321lopez]

Tony, you made a typo in the CC

You say +66 but it sais +666

[Adam12088]

i could watch 5:37 - 5:59 for hours

[ghazzter]

This became more awesome because you mentioned Star Trek, lmao love the Captain Kirt action figure behind you.

[filthyfun]

love your vids

[uceid]

Great Video Tony! It seem to be a trend of some sort... everything we can't put math on it HAS to be dark matter. Like we are understanding everything and are only missing dark matter.

[TeapTemple]

I honestly wish you had your own TV channel...:( Your educational videos are the reason I visit youtube!

[BlazingDeath108]

and I've only seen like 20 star trek episodes in my life, but I HAVE seen the one you were talking about lol!

[BlazingDeath108]

I get super excited every time I see a new video by you on my front page. Thanks again for another great episode Tony!

[Halflifefan54]

Dark Matter is so cool to me. I think it's because it's so mysterious. I guess I just dig the mystery :P

[Brewhahh]

It was the Static Bubble Episode!!!! .....Sheldon: "WHHEAATOONN!!!"

[ferrett78]

PS: lay off the caffeiene before making the vids :-)

[TSFCEntertainment]

@tdarnell I don't understand. when we look into the "distant" universe, are we really only looking into the distant past? since light from that distance takes so long to reach us, isn't it impossible to have an accurate understanding of what's actually out there? & only what 'was' there once?? I'm confused...

[yourfullofsheite]

Astronomy had only a very passing interest for me before. Since I've subbed to this channel the amount of and interest in information about what could be best described as the real big picture,has grown exponentially.We are the universe looking at itself..Awesome...and not like "this is a awesome hot dog" more like"Holy shit the reality of this is making me dizzy" -AWESOME

[ferrett78]

Pfft - the galaxy catalogue number is FAR easier to remember than "dark matter galaxy". ;-) Thanks again, Tony. I always enjoy your videos.

[wasdom01]

"If there's nothing wrong with me, there must be something wrong with the universe". That sounds like a good Republican slogan for the election.

[sushanalone]

Arent dwarf galaxies usually revolving around larger galaxies?, and doesnt that mean that the darkmatter from the greater galaxy extending to the dwarf galaxy is causing the bending , and not the gravity from the dwarf galaxy? wont make any difference but just curious.

[arvidmr]

Those outtakes shows a humanity.

[huyked]

Lovin' your very informative videos. Thank you Mr. Darnell.

[xBloodXGusherx]

Amazing videos.

[lucabaracuda987]

i just tried doing my first youtube video with just a pic and an mp3 file, damn so much work.

SO i cant imagine the work that's being put into your videos Tony.

Keep it up ma brotha'. :)

[MindSeeR666]

@lucabaracuda987 Meh, I did 11 videos last night and I find it a breeze ^^

The same thing you tryed to do tehe

[tdarnell]

@lucabaracuda987 Thank you. I'm getting into a groove with these now: start with a script, practice a couple of times, film it, import into Final Cut, edit out the crap, save some bloopers, add supporting graphics/screenshots/animation­s.

If I start after work around 6:30, I can usually upload around midnight. Last week during the AAS I switched from iMovie to Final Cut and the learning curve there kinda killed me, but I'm past the worst of that now.

[lucabaracuda987]

@tdarnell hey T just had a bunch load of beers and a bottle of Gin cause its Australia Day and wanted to drop in to give you a friendly /hug. So don't ask me why I'm doing it. I just feel like it :)

[Gibranmacias911]

Who thinks the universe is just another tiny dot and there's millions and millions of them

[Halflifefan54]

@Gibranmacias911 I'd say anyone who thinks that is irrational, and operating on blind faith. I don't see any evidence that there are other universes. However, if there is evidence, please, enlighten me.

[boomhauerr]

This stuff is so interesting, well worth the subscribe

[FIGHTFANNERD3]

@boomhauerr you better find it interesting

[cowbell4kid]

At 3:57 is that a graph showing the amount of LOL in the universe compared to time and space? I think Einstein would find that very intriguing!! :D

[bobsmeerfak]

Good video, Tony. I'm going to try out that Beverly Crusher line.

[AtheistToothFairy]

I still love the out-takes, no matter what that ONE person said ;)

[irishmonkey640]

Great video =D

[emailchrismoll]

i just watch these videos for the duck phone