Astrobiology and the Origins of Life

[@Ramshobraja]

Brilliant talk. A great introduction for non-scientists about life possibilities in the universe.

[@kiadude1]

I like how he says dinosaur. But no seriously, amazing video, a great help :)

[@henryburner]

Thanks for the video. Very interesting subject and a great teacher. :)

[@mattetjus]

[error, this part should go before the above answer] Stars are also formed within the columns, but we cant see those due to the dense gas (not anywhere near as dense as our atmosphere though). The reason for the gas being "blown down"; Stars with active fusion in them 'produce' energy which eventually is emitted from the surface via photons, plasmas and other particles.... (change 'inertia' above to 'momentum)

[@tnguyen318]

Fact is the Essential Form of Knowledge. Knowledge is Truth and Reality.

[@KrnelPanc]

this guy is freaking awesome. so crazy how much we've learned and pieced together.

[@Nez949]

I see so many correlations between the universe and cytology, I look at the universe as one big "Cosmic-Cell" and everything within this Cosmic-Cell(stars, black holes, matter) are just "Cosmic-Organelles" responsible for the cell's function. I view this sudden acceleration of the universe as the Cosmic-Cell in the midst of division from its sister Cosmic-Cell(slow process). We are the stuff of stars, the stars are the stuff of the universe; are we so egotistical to think we are so different?

[@alexasmithy]

brilliant video

[@HuckleberrySlim]

when was this recorded?

[@alexasmithy]

some really good stuff here

[@nirmell]

Amazing talk thank u

[@jonstfrancis]

The speaker has a new book published "Assembling Life, how can life begin on Earth and other habitable planets", thinking of purchasing this.

[@jayejayeee]

love the video really good

[@SmokingPhoenix85]

Hey, plz help me whit this. At 15:40 or so he starts talking about the culoms. He says stars start to form on the tips. Why do they form there? He futher goes on saying that the culoms get blown down? I realy dont understand how this thing works. Why does it get blown down?

[@astrobiologistraven]

Thank You :) , Masterpiece!

[@MilesB1975]

Start practicing what you preach and start observing the universe.

[@MrJamesdryable]

Should he just stare into the sky all night?

[@DonaldKronos]

To anyone who didn't understand about 44 minutes into this video how what survived falling to earth could possibly build more complex components of life, try running searches for such things as microscopic self assembly, nanoscale self assembly, macroscopic self assembly, self organization, and cellular automata. If you can't put the pieces together from what you can find with those searches, re-enroll in kindergarten and start from the beginning, but not in the same schools you've already attended because something had to have gone drastically wrong with your education somewhere along the way.

[@mattetjus]

...the photons and particles collide with the gas particles in the nebula and the total inertia of the particles will often enough still be away from the star -> gas is blown away. Blown away down is due to the gravitational pull of the cloud or magnetic fields binding ionised molecules/dipoles together.

[@CiaoBello21]

This guy is chill

[@JaskaranSingh-om5mv]

I am from india i want to join nasa as an astrobiologist ... After completing my btech in biotechnology..... Please tell me how to apply and make a career in nasa

[@spatrk6634]

you cannot get into NASA without being American citizen.

[@Enleuk]

@demonx406 I was typing too fast. I see now that I missed an 's' in my last comment as well. Don't see anything wrong with the grammar apart from starting one sentence with 'or'.

[@giodoli93]

that statement wrecks my brain XD

[@danhopewell]

merci

[@MelliaBoomBot]

yay 2018!

[@HarshColby]

@MrPu: 1. no, that was evolution; 2. no, that was evolution; 3. it didn't "try"; 4. chemistry; 5. the ejecta did.

[@tnguyen318]

To the naked human eye its fact, under microscope it's something else. It's better to say that it's fact until proven otherwise. Gravity doesn't pull things down. If Gravity pulls things down, how come Spaceships out in space doesn't fall down. I don't think knowledge requires understanding relationships between facts. But first we need to define what is knowledge. Information is the word.

[@demonx406]

@Enleuk i fgred that owt but yur splin n grammor is soo gud in thet ferst poast it hert to reed

[@MrKmanthie]

Good video. Great talk. Problem: SOUND IS GRATING! (that ubiquitous 'buzz'). Otherwise, good stuff. Wish there were many more like this video instead of the majority of crap on YT: senseless, insane conspiracy bullshit, religious shit, goofy weirdos haranguing anyone who has the unfortunate position to come across these dumb things! (ha ha ha ha!)

[@vigilhammer]

Are we taking the word LIFE too literally? Because, we all know that every cell in our body has a genetic code to perform a certain function. A cell of a human heart will not create an eye and the cell of an eye will not create a kidney. So maybe the brain cell has a genetic code that tells it that the entire body and organs are ready to function, so lets start the machine, first with the heart. Its something like a switch which turns a machine on or off. Why cant we accept the above? and again i quote - are we taking the word LIFE too literally?

[@michaelh1830]

Cells differentiate from their initial form with the help of growth factors and via the expression of specific genes. They eventually form specific tissues that eventually form organs. This is a significant oversimplification, but you can read more about it in an embryology textbook. It's very well understood by science.

[@Zentratti]

You should google the word Dullard.

[@demonx406]

@Enleuk You should have stayed in school bro. Maybe go back and try for the ol' G.E.D. this year?

[@risunokairu]

“…if you were a happy dinosaur flying…” shows not dinosaurs

[@jjiimm2011]

this is easy just but a frog in a blender and shoot it into space and when it lands it will live

[@ACDCFAN0418]

i like cranberry juice

[@winterstellar]

@nelsonpaixao Read some science if you want to understand science. If you want to ramble about ancient superstitions/religions, do so at a video about such things and not at a science video.

[@Kommaseir]

GILDAMS...LOL...your comment is so bad I'm just speechless...thanks for a good laugh man...lol!!!!

[@kornkid13]

You should open your mind a little, but that is just my oppinion.

[@nitemoves]

If stars are created in Columns, then were did columns come from? Well? God created everything you all can think of. He created all of the stars, planets, galaxies! Look through your scope all day, noting is gonna change the fact that nothing cannot create something. Kay? You cannot create dust without a maker of dust! Kay?

[@tnguyen318]

How do you prove what is fact and what is not? There have been lots of theories with facts that were believed to be true at the time but now are proven false. It's "collection of evidence believed to be true". Knowledge should be factual and wise, otherwise it would be balogny.

[@araless]

yeah . .. no.

[@danhopewell]

i call bullshit on that! i want that statistic referenced!

[@pdquesnel]

100 tons of space dust per day arrives on earth...

[@Enleuk]

@demonx406 I dunno what a G.E.D. i. I live in Sweden. You do realize that the first two sentences of my comment is ironic, right?

[@MilesB1975]

I challenge you and your god to produce 1 scrap of evidence of his existence to me.

[@illprofess]

and what do you suppose the truth to be.....something other than science? the belief and faith in an imaginary being?

[@AdamKhanRs5]

trying to say we are a mistake or something

[@DylanQuintal]

his lisp is a little distracting.

[@illprofess]

obviously you didnt listen to the entire or more than a couple of seconds....keep running from knowledge

[@MrPuiulamiba]

They are asking the wrong questions. 1.so, did the DNA self-assemble? 2.did the ribosomes self-assemble? 3.why did the "soap balloon" tried to survive? 4.why did the "soap balloon" started to reproduce itself? 5.the asteroid fallen in the Gulf of Mexico was big enough to made his composition part of a rock layer across the Earth? ... the stupid student asked him what is the speed of a bullet... i feel pity.

[@davemojarra4734]

Europa ain't a moon. The Moon is The Moon.

[@MrKmanthie]

Copacetic now THAT is IGNORANCE in a BIG WAY.

[@MrKmanthie]

Bridgeburner you're an idiot. To respond to your flippant, ignorant comment would be a waste of time, since everyone else understands the idea of one of the moons of Jupiter (aka "satellites"), called Europa is obviously a satellite/moon. DUH!!!!! uh-oh, watch out: here comes your kindergarten "teacher" to pull you off the computer since you're just screwing around.

[@MrKmanthie]

PS chidren's comments to these topics are worthless, since they are too young & lack the knowledge to form any opinions on the matter & any "facts" they claim to know are 99% of the time so idiotically wrong as to be hilarious!!

[@whitewolf1298]

The truth is, we just have to take God's Word for the origins of life. Everyone is just trying to disprove the Bible, why not just marvel and believe. There are some things that are just mystery which we will never understand. I was told that scientifically, it is impossible for a bumble bee to fly.

[@spatrk6634]

nobody is trying to disprove bible. because bible was never proven to be true to begin with. people believe it based on faith and some extremists take everything from it literally, so they must deny science because bible was written by bronze age desert goat herders who knew nothing about the world they live in how is it impossible for bumblee bee to fly? is it flying by magic?

[@jayejayeee]

love the video really good