Crab Pulsar

[DantehMan]

My goodness, 1800rpm...it doesn't even seem possible. I love space so much.

[kb7clx]

Interesting, I just slowed this down 8 times with my sound editor, and it seems to have 2 peaks instead of one. Sounds like a fast heartbeat at that speed.

[DonPMitchell]

@kb7clx That makes sense. There are two radio beams going out in opposite directions of the spinning star, so depending on the orientation, probably one of them is aimed more directly at us than the other.

[tibby499]

this thing is spinning at 1800 rpm ... ferrari 458 italia revs up to 9000 rpm .. does that mean the ferrari is better ? :P

[DonPMitchell]

@tibby499 Hehe. Typical pulsars spin a few times a second. But some, like B1937+21, spin at 642 revolutions per second, so they sound like a musical tone. Google for "Sounds of Pulsars" and you can find a page with a number of audio samples.

[VBH8888]

@tibby499 only spinning faster cause its smaller. smaller= faster rotation. I know I know your sarcasm XD

[DonPMitchell]

@VBH8888 Smaller would be faster, and it depends on the angular momentum of the original star. Also, pulsars slow down, so older ones are slower. They slow down because they lose angular momentum via gravity waves, radiation, and interactions with the acretion disk of matter around them.

[steakfacetothemax]

so can we or do we learn anything about these radio signals?

were listening to radio signals from the past!!! wonder how long it took to reach us

[ispdni1234]

@steakfacetothemax Btw I checked, the crab nebula is 6,500 light years away, so in other words this is how it sounded and looked 6,500 years ago. Now? Who knows... I guess if they have enough information surrounding it (specifically when it became a supernova (1054) and it's size) they maybe able to give a rough estimate of when it will die. Would you believe the nebula expands at about 930 miles per second! (according to wiki)

[joab321]

a pulsar and a neutron star are the same thing. One is called a pulsar because its beam of electromagnetic radiation lies on the same plane as the earth. So it is observed as a light house beam!

[starstuff69]

look for the vid on "sounds of 47 tucanae"...its a star cluster with something like 16 or so millisecond pulsars all together.the sound is simply amazing!

[richie8811]

i can't believe that thing is spinning at 1,800 rpm... it's mind boggling...

[celebrityfan1990]

I love astronomy

[superiormusic]

30,2 RPs = 1812 RPM. Am I correct?

[Eisfeldziontko]

Amazing, thank you for the movie, and greetings from Poland dear DonPMitchell..

[DonPMitchell]

This is a video of the pulsar in the center of the Crab Nebula, with the audio being the actual radio signal. You can find more information about it on wikipedia. It's a rapidly spinning neutron star left behind after a super nova.

[ErickSvensson]

Simply amazing. No one would have ever imagined that we'd find such beautiful and complex structures in the universe.

We have only discovered a small part of it, yet I find myself amazed by its perfection.

[BCSpore]

Imagine somthing as big as a large city, yet twice as heavy as the Sun, spinning at a steady rate of 30 rotations per second, and all that Inertia came from the supernova that created it. Plus two giant radiation death-rays coming from the poles of the spinning beast that fry anything that it touches. Reminds us of how vonerable and weak we are in the Universe.

[Darknessofthenight12]

it spins at 30 times per second

thats pretty fast

[lyue1996]

So cool.

[marco240591]

wow

[AtlasRedux]

Oooh, intense one!

[SAMMYJS991]

1800rpm, weighs twice as much as our sun, compacted into a diameter only 6 miles wide AND......AND, the inner ring that you see - is approximately 1 light year in diameter.

that crab nebula must 1 large mother-"you know what".

makes you realize just how small we really are in the scheme of all things.

[Puullenn]

Sounds Beautiful. :) I want to become an astronomer when im older :D

Taking mty G.C.S.E's Now.

[lilmissglentoran]

Yeah I can hear the spinning, thats the speed it does woah

[andy7666]

Its insane isn't it? Something that big moving so fast!

[BOMBAIDEOLOGICA]

SCARYYYYYY!!!!!!!!!!!!!!!

[stickinabut]

a pulsar is a remnant of a stars supernova and if a supernova somehow survives it becomes a pulsar, it doesn't give sunlight it gives out radiation like radio waves, also pulsar planet are known as neutron stars.

[hattonhaha]

noo... a neutron star is a collapsed red giant and a pulsar is a spinning star emitting electromagnetic waves at either end. each noise from it shows half a rotation. they do give out light though

[DonPMitchell]

A pulsar is a spinning neutron star. The Crab nebula is a super nova remnant.

[CT6CrazyCanuck]

White Dwarf = Collapsed Red Giant

Neutron Star = Collapsed "Large" Red Giant"

Pulsar = Spinning Neutron Star

Black Hole = Collapsed "Massive" Red Giant

[GordonMorrice]

The thing about pulsars is that no one really knows EXACTLY what they are. There are many competing models for what they are and why they behave the way they do, but nothing that makes sense. They are the most mysterious objects in the galaxy that we currently know of.

[SouthwesternEagle]

This was a star that exploded back in 1054.

[Insomnium2188]

@SouthwesternEagle Actually the crab nebula is 6500 light years away so it exploded 5446 before counting. amazing isn't it :)

[fatansassy911]

i felt weird inside after watching this any1 else feel the same?

[Assasinchen2006]

I felt like....woah,i wanna see this firsthand,which,ofc,is not possible without me gettin a nice,crunchy radiationburn but hey...must be cool to seeing a pulsar in real :P.

[phy94]

It looks like a gyroscope . peace .

[DonPMitchell]

Chinese astronomers noted and recorded the super nova explosion that created the Crab pulsar. I'm not sure this is the "morning star" mentioned in the Quran, but of course the Islamic world had first-rate astronomers in the middle ages.

[ItalianBandit]

that's a mother fucking fast spinning pulsar! that's like what 100 t/s

[kadukov]

"The period of rotation of the [Crab] neutron star is 0.0335028583 seconds.", says professor Walter Lewis, astrophysicist from MIT. that means about 30Hz, pretty high for something so big...

[clarissashin212]

ouch my poor ears... but awesome... ouch

[quexalcoatl]

I've always been awestruck by pulsars they must be one of the most astonishing things in the universe, right up there with singularities at least for me.

[DonPMitchell]

Yes, like a machine gun. The point is, this is an object that weighs twice as much as the Sun, and it is spinning that fast!

[MaiL0MaN5]

neutron stars are like machine guns

[Direwolf56]

sounds like a lawnmower engine to me

[5thElement15]

cool bit hard on my ears but cool . Karen

[Bloodysaber]

I don't know why but I am somewhat scared by that.

That's amazing, it just baffles me.

[DonPMitchell]

Well, you definitely would not want to get close to a pulsar. The radiation would be lethal.

[BatchDrake]

@DonPMitchell if we take the intense gravitation pull in the surrounding area in consideration we can talk about a dramatical death where you are literally smashed into the surface and your body explodes (implodes) into a deadly burst of gamma rays.

[DonPMitchell]

@BatchDrake This is also why spaceships traveling throught "wormholes" is a bad idea. Yeah, you might go in a wormhole and come out somewhere far away in space, but as a burst of gamma rays and protons and stuff.

[MaiL0MaN5]

space is a scary place

[godzillarules798]

i cant wait until we can explore it more closely

[FionaTheFox]

I imagine this pulsar looks like a disk spinning 30 times per second! That's 30 days per second! Imagine that, every second, this pulsar completes an earth month!

[FionaTheFox]

My body felt weird when I watched this. Did this happen to anyone else?

[JustCallMePansy]

Yes. Very much. It was like I was in some sound vortex and my ears got sucked into my head. I didn't like it.

[geoffleonard]

And what makes it more eerie is the fact that the sound we are hearing has taken 6500 years to reach us! we are hearing the pulsar as it was 2000 years before the pyramids were built!

[MaiL0MaN5]

no but i was baffled to hear that it sounds like this

[chiefmojorising1]

YEAH!!! I FELT IT TO!

[angelofdeath275]

This video needs more recognition.....

[CCCSEY]

It is sooooo amazing. I wouldn't think there is voices like this. Thanks soooo much.

[angelofdeath275]

wow. it does sound like its pulsing.

[layinlow64]

cool. you know we are just a big ball aimlessly traveling in open space, yet for as long as we have traveled its really know where in the grand scheme of things