Neutron Stars: Crash Course Astronomy #32

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In the aftermath of a 8 – 20 solar mass star’s demise we find a weird little object known as a neutron star. Neutrons stars are incredibly dense, spin rapidly, and have very strong magnetic fields. Some of them we see as pulsars, flashing in brightness as they spin. Neutrons stars with the strongest magnetic fields are called magnetars, and are capable of colossal bursts of energy that can be detected over vast distances.

Crash Course Astronomy Poster:

Table of Contents
A Star Can Collapse to Form a Neutron Star 0:59
Neutron Star Characteristics 2:24
Pulsars 5:56
Magnetars 8:15

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Star Burst [credit: NASA’s Goddard Space Flight Center]
X-ray Images of G292.0+1.8 [credit: X-ray: NASA/CXC/Penn State/S.Park et al.; Optical: Pal.Obs. DSS]
Neutron star cross section [credit: NASA]
Fermi Spots ‘Superflares’ in the Crab Nebula [credit: NASA/Goddard Space Flight Center]
What is a pulsar? [credit: NASA’s Goddard Space Flight Center]
Jocelyn Bell [credit: National Media Museum / Science & Society Picture Library]
Beacons of X-ray Light [credit: NASA/JPL-Caltech]
Chandra Time-Lapse Movie [credit: NASA/CXC/ASU/J.Hester et al.]
NASA’s Fermi Satellite Finds Hints of Starquakes in Magnetar ‘Storm’ [credit: NASA’s Goddard Space Flight Center/S. Wiessinger]
NASA’s Swift Reveals New Phenomenon in a Neutron Star [credit: NASA’s Goddard Space Flight Center]
Cosmic Explosion Second Only to the Sun in Brightness [credit: NASA/Goddard Space Flight Center Conceptual Image Lab]


VladGoro25 says:

Can someone tell if i am wrong?
White dwarf (made of atoms, for example Carbon atoms) —> Neutron star (dwarf, that overcame EDP and shrunk into ball of neutrons) —> Magnetar (even denser than neutron star (idk how is that posible) and have much stronger mag field) —> Black Hole

Doc Holiday says:

Good presentation.
Close on most facts and data.
Enjoyed it.

Minimum mass of a pulsar is the chandrasekhar limit (~1.44 solar masses). Maximize mass for a pulsar is the same as the minimum mass for a black hole, the Holiday limit (2.88 solar masses.)

Older video so they failed to distinguish between degenerate matter (matter that has overcome electron degeneracy) in a white dwarf and string matter (matter that has overcome both electron and neutron degeneracy) as is the case with both pulsars and black holes.
Still, it was worth watching.

Anita Bonghit says:

so…..everyone is a fatso on a neutron star but what about "oldtron " stars ???eh eh !!

Jordan Hyde says:

Hence a saying, “the more you know, the more you don’t know”

David Shaw says:

Jocelyn Bell should have got the Nobel prize not her professor who was the recipient he did not do anything until Bell pointed it out.

David Rapalyea says:

In what ways can a nutron star become a black hole?


Love the Kerbals in the back ground 😛
That game is so frustrating but helps you click onto mechanics so well

Jannie Gonzales says:

Hmm, what if a Proton Star was discovered?

GShock112 says:

This pathetic NASA shill speaks about physics and he can't figure out the problem of radiation belts nor basic photography (films withstanding extreme temperatures), basic CGI (front screen projections), basic photoediting (crosshairs overimposed on picture subjects)… loathing sellout.

Bendu Nemesis says:

This is awesome! One thing, though, on iPhone the pop up little messages are a little too small to read in the millisecond you allow them on screen. So either make them bigger or freeze them longer on screen. Thanks for all this amazing stuff

Theo Seraphine says:

Do I Have this ..There is no illnes and there is only illnes mynd and harmed my bio rythm ..What I need like a flower , to know that I am A girl and woman , understanding ,love , food and warm place…

NASACrooks says:

now, that's a face only a jewish mother can love.

Satya Legawa says:

Is it baby black hole?

saifMSK says:

People in the 60s were horrible at giving things names

mbajja abdallah says:

I really have no idea what he was saying but I enjoyed it so much I subscribed

James Bellegarde says:

It amazes me that you have the gall to say we know that neutron stars are….. He’s actually been close enough to make visual measurements and obtain accurate data. No pretty sure you’re not I would have to say you’re getting settled science confused with proven science there is no proof of neutron stars there’s no proof of the big bang there’s no proof that the earth has a solid metal core. I actually took astronomy and physics and university and I know how this goes, you get a whole bunch a scientist together in your throat to Siri and if the majority of them agree with it you call it prevents I asked when in fact it’s only settled science. I know your entire education is pinned to big bang cosmology but it is hard to prove it plasma cosmology as every bit as many positives in his corner where is about as many negative check marked as the big bang theory. We don’t have one theory we have two competing theories the only difference is plasma cosmologist will only use proven science as a post to big Bend cosmologist using excepted science. Who is the real scientists you guys in a room putting their hands up all the green I’m sure the reservoirs held and everybody agreed the world is flat did that. Did that make it proven science….NO. I actually do like your videos but you really have to stop saying stupid things like we know a neutron star in it you haven’t even proven a neutron star exists that a theory based on the probably incorrect interpretation of the data. Change that part of your video and I think it’s fantastic I no longer believe in big bang cosmology because I have seen all the areas it’s fail to match observation.

Kim Thing says:

6:54 "Little Green Man 1" I guess it's a Kerbal

gravy boat says:

Why don't teachers just be like this guy or just make kids watch these vids and save a bunch of time and money

Joven Labarda says:

If there are already some nuetron stars in our galaxy and this neutron stars formed after a supernova of star which have a few tens of billions years old to a couple of hundred, then does that mean that the universe is much older than 13.7 billion years old?

Gamerz Grip says:

Because it's 50,000 LY away how long ago did it burst .

eric berg says:

So now I want to know how much of the galaxy did that xray burst sterilize.

Ninjxxitty says:

the way you talk reminds me of jim carrey when hes being sarcastic

Franky Padilla says:

I wonder what will happen to a fart on a neutron star

Divine Fye says:

Gawd when will the "science guy" persona ever die? Imagine if your doctor or your lawyer explained things to you with that voice? PLeeease it die!

Colin Timp says:

Something you could've mentioned is that magnetar quake was equivalent to 23 on the Richter Scale; and completely obliterated everything within at least 10 light-years from the star.

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